diff --git a/E04SumCalculator/.gitignore b/E04SumCalculator/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..aa724b77071afcbd9bb398053e05adaf7ac9405a
--- /dev/null
+++ b/E04SumCalculator/.gitignore
@@ -0,0 +1,15 @@
+*.iml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+.cxx
+local.properties
diff --git a/E04SumCalculator/.idea/.gitignore b/E04SumCalculator/.idea/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..26d33521af10bcc7fd8cea344038eaaeb78d0ef5
--- /dev/null
+++ b/E04SumCalculator/.idea/.gitignore
@@ -0,0 +1,3 @@
+# Default ignored files
+/shelf/
+/workspace.xml
diff --git a/E04SumCalculator/.idea/.name b/E04SumCalculator/.idea/.name
new file mode 100644
index 0000000000000000000000000000000000000000..3491d4b5c165a83d57d70c6095cc2c7b092f745e
--- /dev/null
+++ b/E04SumCalculator/.idea/.name
@@ -0,0 +1 @@
+E04 Sum Calculator
\ No newline at end of file
diff --git a/E04SumCalculator/.idea/compiler.xml b/E04SumCalculator/.idea/compiler.xml
new file mode 100644
index 0000000000000000000000000000000000000000..b589d56e9f285d8cfdc6c270853a5d439021a278
--- /dev/null
+++ b/E04SumCalculator/.idea/compiler.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+ <component name="CompilerConfiguration">
+ <bytecodeTargetLevel target="17" />
+ </component>
+</project>
\ No newline at end of file
diff --git a/E04SumCalculator/.idea/deploymentTargetDropDown.xml b/E04SumCalculator/.idea/deploymentTargetDropDown.xml
new file mode 100644
index 0000000000000000000000000000000000000000..0c0c3383890637b4721df1f49d0b229e55c0f361
--- /dev/null
+++ b/E04SumCalculator/.idea/deploymentTargetDropDown.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+ <component name="deploymentTargetDropDown">
+ <value>
+ <entry key="app">
+ <State />
+ </entry>
+ </value>
+ </component>
+</project>
\ No newline at end of file
diff --git a/E04SumCalculator/.idea/gradle.xml b/E04SumCalculator/.idea/gradle.xml
new file mode 100644
index 0000000000000000000000000000000000000000..0897082f7512e48e89310db81b5455d997417505
--- /dev/null
+++ b/E04SumCalculator/.idea/gradle.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+ <component name="GradleMigrationSettings" migrationVersion="1" />
+ <component name="GradleSettings">
+ <option name="linkedExternalProjectsSettings">
+ <GradleProjectSettings>
+ <option name="externalProjectPath" value="$PROJECT_DIR$" />
+ <option name="gradleJvm" value="#GRADLE_LOCAL_JAVA_HOME" />
+ <option name="modules">
+ <set>
+ <option value="$PROJECT_DIR$" />
+ <option value="$PROJECT_DIR$/app" />
+ </set>
+ </option>
+ <option name="resolveExternalAnnotations" value="false" />
+ </GradleProjectSettings>
+ </option>
+ </component>
+</project>
\ No newline at end of file
diff --git a/E04SumCalculator/.idea/kotlinc.xml b/E04SumCalculator/.idea/kotlinc.xml
new file mode 100644
index 0000000000000000000000000000000000000000..fdf8d994a6599dd8b64a341af14c598069a10022
--- /dev/null
+++ b/E04SumCalculator/.idea/kotlinc.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+ <component name="KotlinJpsPluginSettings">
+ <option name="version" value="1.9.0" />
+ </component>
+</project>
\ No newline at end of file
diff --git a/E04SumCalculator/.idea/migrations.xml b/E04SumCalculator/.idea/migrations.xml
new file mode 100644
index 0000000000000000000000000000000000000000..f8051a6f973e69a86e6f07f1a1c87f17a31c7235
--- /dev/null
+++ b/E04SumCalculator/.idea/migrations.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+ <component name="ProjectMigrations">
+ <option name="MigrateToGradleLocalJavaHome">
+ <set>
+ <option value="$PROJECT_DIR$" />
+ </set>
+ </option>
+ </component>
+</project>
\ No newline at end of file
diff --git a/E04SumCalculator/.idea/misc.xml b/E04SumCalculator/.idea/misc.xml
new file mode 100644
index 0000000000000000000000000000000000000000..8978d23db569daa721cb26dde7923f4c673d1fc9
--- /dev/null
+++ b/E04SumCalculator/.idea/misc.xml
@@ -0,0 +1,9 @@
+<project version="4">
+ <component name="ExternalStorageConfigurationManager" enabled="true" />
+ <component name="ProjectRootManager" version="2" languageLevel="JDK_17" default="true" project-jdk-name="jbr-17" project-jdk-type="JavaSDK">
+ <output url="file://$PROJECT_DIR$/build/classes" />
+ </component>
+ <component name="ProjectType">
+ <option name="id" value="Android" />
+ </component>
+</project>
\ No newline at end of file
diff --git a/E04SumCalculator/.idea/vcs.xml b/E04SumCalculator/.idea/vcs.xml
new file mode 100644
index 0000000000000000000000000000000000000000..6c0b8635858dc7ad44b93df54b762707ce49eefc
--- /dev/null
+++ b/E04SumCalculator/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+ <component name="VcsDirectoryMappings">
+ <mapping directory="$PROJECT_DIR$/.." vcs="Git" />
+ </component>
+</project>
\ No newline at end of file
diff --git a/E04SumCalculator/app/.gitignore b/E04SumCalculator/app/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..42afabfd2abebf31384ca7797186a27a4b7dbee8
--- /dev/null
+++ b/E04SumCalculator/app/.gitignore
@@ -0,0 +1 @@
+/build
\ No newline at end of file
diff --git a/E04SumCalculator/app/build.gradle.kts b/E04SumCalculator/app/build.gradle.kts
new file mode 100644
index 0000000000000000000000000000000000000000..bdb453ff0ca4056ea68d65f2fbe7f371a5e46982
--- /dev/null
+++ b/E04SumCalculator/app/build.gradle.kts
@@ -0,0 +1,75 @@
+plugins {
+ id("com.android.application")
+ id("org.jetbrains.kotlin.android")
+}
+
+android {
+ namespace = "com.example.e04sumcalculator"
+ compileSdk = 34
+
+ defaultConfig {
+ applicationId = "com.example.e04sumcalculator"
+ minSdk = 30
+ targetSdk = 34
+ versionCode = 1
+ versionName = "1.0"
+
+ testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
+ vectorDrawables {
+ useSupportLibrary = true
+ }
+ }
+
+ buildTypes {
+ release {
+ isMinifyEnabled = false
+ proguardFiles(
+ getDefaultProguardFile("proguard-android-optimize.txt"),
+ "proguard-rules.pro"
+ )
+ }
+ }
+ compileOptions {
+ sourceCompatibility = JavaVersion.VERSION_1_8
+ targetCompatibility = JavaVersion.VERSION_1_8
+ }
+ kotlinOptions {
+ jvmTarget = "1.8"
+ }
+ buildFeatures {
+ compose = true
+ }
+ composeOptions {
+ kotlinCompilerExtensionVersion = "1.5.1"
+ }
+ packaging {
+ resources {
+ excludes += "/META-INF/{AL2.0,LGPL2.1}"
+ }
+ }
+}
+
+dependencies {
+ implementation("androidx.core:core-ktx:1.12.0")
+ implementation("androidx.lifecycle:lifecycle-runtime-ktx:2.6.2")
+ implementation("androidx.activity:activity-compose:1.8.1")
+ implementation(platform("androidx.compose:compose-bom:2023.08.00"))
+ implementation("androidx.compose.ui:ui")
+ implementation("androidx.compose.ui:ui-graphics")
+ implementation("androidx.compose.ui:ui-tooling-preview")
+ implementation("androidx.compose.material3:material3")
+ implementation("androidx.compose.material3:material3-window-size-class")
+ testImplementation("junit:junit:4.13.2")
+ androidTestImplementation("androidx.test.ext:junit:1.1.5")
+ androidTestImplementation("androidx.test.espresso:espresso-core:3.5.1")
+ androidTestImplementation(platform("androidx.compose:compose-bom:2023.08.00"))
+ androidTestImplementation("androidx.compose.ui:ui-test-junit4")
+ debugImplementation("androidx.compose.ui:ui-tooling")
+ debugImplementation("androidx.compose.ui:ui-test-manifest")
+
+ // extra dependencies
+ implementation("androidx.lifecycle:lifecycle-viewmodel-compose:{latest_version}")
+
+ // Third party libraries
+ implementation("com.notkamui.libs:keval:0.9.0")
+}
\ No newline at end of file
diff --git a/E04SumCalculator/app/proguard-rules.pro b/E04SumCalculator/app/proguard-rules.pro
new file mode 100644
index 0000000000000000000000000000000000000000..481bb434814107eb79d7a30b676d344b0df2f8ce
--- /dev/null
+++ b/E04SumCalculator/app/proguard-rules.pro
@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+# http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+# public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile
\ No newline at end of file
diff --git a/E04SumCalculator/app/src/androidTest/java/com/example/e04sumcalculator/ExampleInstrumentedTest.kt b/E04SumCalculator/app/src/androidTest/java/com/example/e04sumcalculator/ExampleInstrumentedTest.kt
new file mode 100644
index 0000000000000000000000000000000000000000..8164265c8fed085700612b5ec6171bbd42a59090
--- /dev/null
+++ b/E04SumCalculator/app/src/androidTest/java/com/example/e04sumcalculator/ExampleInstrumentedTest.kt
@@ -0,0 +1,24 @@
+package com.example.e04sumcalculator
+
+import androidx.test.platform.app.InstrumentationRegistry
+import androidx.test.ext.junit.runners.AndroidJUnit4
+
+import org.junit.Test
+import org.junit.runner.RunWith
+
+import org.junit.Assert.*
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * See [testing documentation](http://d.android.com/tools/testing).
+ */
+@RunWith(AndroidJUnit4::class)
+class ExampleInstrumentedTest {
+ @Test
+ fun useAppContext() {
+ // Context of the app under test.
+ val appContext = InstrumentationRegistry.getInstrumentation().targetContext
+ assertEquals("com.example.e04sumcalculator", appContext.packageName)
+ }
+}
\ No newline at end of file
diff --git a/E04SumCalculator/app/src/main/AndroidManifest.xml b/E04SumCalculator/app/src/main/AndroidManifest.xml
new file mode 100644
index 0000000000000000000000000000000000000000..835294c2f9217949960621a3e70a6971f46ae8ab
--- /dev/null
+++ b/E04SumCalculator/app/src/main/AndroidManifest.xml
@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+ xmlns:tools="http://schemas.android.com/tools">
+
+ <application
+ android:allowBackup="true"
+ android:dataExtractionRules="@xml/data_extraction_rules"
+ android:fullBackupContent="@xml/backup_rules"
+ android:icon="@mipmap/ic_launcher"
+ android:label="@string/app_name"
+ android:roundIcon="@mipmap/ic_launcher_round"
+ android:supportsRtl="true"
+ android:theme="@style/Theme.E04SumCalculator"
+ tools:targetApi="31">
+ <activity
+ android:name=".MainActivity"
+ android:exported="true"
+ android:label="@string/app_name"
+ android:theme="@style/Theme.E04SumCalculator">
+ <intent-filter>
+ <action android:name="android.intent.action.MAIN" />
+
+ <category android:name="android.intent.category.LAUNCHER" />
+ </intent-filter>
+ </activity>
+ </application>
+
+</manifest>
\ No newline at end of file
diff --git a/E04SumCalculator/app/src/main/java/com/example/e04sumcalculator/CalculatorViewModel.kt b/E04SumCalculator/app/src/main/java/com/example/e04sumcalculator/CalculatorViewModel.kt
new file mode 100644
index 0000000000000000000000000000000000000000..19a026eaa388fc585d96f1135ccd70e3f1020cad
--- /dev/null
+++ b/E04SumCalculator/app/src/main/java/com/example/e04sumcalculator/CalculatorViewModel.kt
@@ -0,0 +1,113 @@
+package com.example.e04sumcalculator
+
+
+import androidx.lifecycle.ViewModel
+import com.notkamui.keval.keval
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.asStateFlow
+import kotlinx.coroutines.flow.update
+import java.math.RoundingMode
+
+
+data class MathExpression(
+ val expression: String,
+ val result: String
+)
+
+const val EXAMPLE_EXPRESSION = "(e*PI)^2 * ((10-2.5+3)/2)^2"
+
+data class CalculatorState(
+ val previousExpressions: MutableList<MathExpression> = mutableListOf(
+ MathExpression(
+ EXAMPLE_EXPRESSION,
+ EXAMPLE_EXPRESSION.keval().toBigDecimal().setScale(2, RoundingMode.HALF_EVEN).toString()
+ )
+ ),
+ val currentExpression: MathExpression = MathExpression("", "")
+)
+
+class CalculatorViewModel : ViewModel() {
+ private val _state = MutableStateFlow(CalculatorState())
+ val state: StateFlow<CalculatorState> = _state.asStateFlow()
+ private val validDigits = setOf("0", "1", "2", "3", "4", "5", "6", "7", "8", "9", ".")
+ private val validKevalOperators = setOf("+", "-", "*", "/", "%", "^", "neg", "PI", "e", "(", ")")
+ private val validActions = setOf("C", "<=", "=")
+
+ fun onKeyPressed(data: String) {
+ val expr = _state.value.currentExpression.expression
+ if (isValidDigit(data) || isValidOperator(data)) {
+ concatCurrentExpression(data)
+ } else if (isValidAction(data)) {
+ when (data) {
+ "C" -> clearCurrentExpression()
+ "=" -> evaluateCurrentExpression()
+ "<=" -> eraseLastCharacter()
+ }
+ } else {
+ println("Have no idea what you are doing.")
+ }
+ }
+
+ private fun evaluateCurrentExpression() {
+ val expr = _state.value.currentExpression.expression
+ if (expr.isEmpty()) return
+ var exprRes = "Error"
+ try {
+ exprRes = expr
+ .keval()
+ .toBigDecimal()
+ .setScale(2, RoundingMode.HALF_EVEN)
+ .toString()
+ } catch (error: Exception) {
+ println("Error curred")
+ }
+ _state.update {
+ var prevExpressions = it.previousExpressions
+ prevExpressions.add(MathExpression(expr, exprRes))
+ CalculatorState(
+ previousExpressions = prevExpressions,
+ currentExpression = MathExpression("", "")
+ )
+ }
+ }
+
+ private fun eraseLastCharacter() {
+ val expr = state.value.currentExpression.expression
+ if (expr.isNotEmpty()) {
+ _state.update {
+ it.copy(currentExpression = MathExpression(expr.dropLast(1), ""))
+ }
+ } else if (_state.value.previousExpressions.size > 0) {
+ _state.update {
+ var prevExpressions = it.previousExpressions
+ var lastExpr = prevExpressions.removeLast()
+ it.copy(previousExpressions = prevExpressions, currentExpression = lastExpr)
+ }
+ }
+ }
+
+ private fun clearCurrentExpression() {
+ _state.update {
+ it.copy(currentExpression = MathExpression("", ""))
+ }
+ }
+
+ private fun concatCurrentExpression(str: String) {
+ _state.update {
+ it.copy(currentExpression = MathExpression(it.currentExpression.expression + str, ""))
+ }
+ }
+
+ private fun isValidDigit(str: String): Boolean {
+ return validDigits.contains(str)
+ }
+
+ private fun isValidOperator(str: String): Boolean {
+ return validKevalOperators.contains(str)
+ }
+
+ private fun isValidAction(str: String): Boolean {
+ return validActions.contains(str)
+ }
+}
diff --git a/E04SumCalculator/app/src/main/java/com/example/e04sumcalculator/MainActivity.kt b/E04SumCalculator/app/src/main/java/com/example/e04sumcalculator/MainActivity.kt
new file mode 100644
index 0000000000000000000000000000000000000000..2105bbaf5b0a61278e59cf45e3edadc45462f56e
--- /dev/null
+++ b/E04SumCalculator/app/src/main/java/com/example/e04sumcalculator/MainActivity.kt
@@ -0,0 +1,571 @@
+package com.example.e04sumcalculator
+
+import android.os.Bundle
+import androidx.activity.ComponentActivity
+import androidx.activity.compose.setContent
+import androidx.activity.viewModels
+import androidx.annotation.DrawableRes
+import androidx.compose.foundation.Image
+import androidx.compose.foundation.background
+import androidx.compose.foundation.border
+import androidx.compose.foundation.gestures.rememberScrollableState
+import androidx.compose.foundation.gestures.scrollBy
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.IntrinsicSize
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.aspectRatio
+import androidx.compose.foundation.layout.fillMaxHeight
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.wrapContentHeight
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.material3.Button
+import androidx.compose.material3.Divider
+import androidx.compose.material3.Surface
+import androidx.compose.material3.Text
+import androidx.compose.material3.windowsizeclass.ExperimentalMaterial3WindowSizeClassApi
+import androidx.compose.material3.windowsizeclass.WindowSizeClass
+import androidx.compose.material3.windowsizeclass.WindowWidthSizeClass
+import androidx.compose.material3.windowsizeclass.calculateWindowSizeClass
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.derivedStateOf
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.rememberCoroutineScope
+import androidx.compose.runtime.saveable.rememberSaveable
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.layout.ContentScale
+import androidx.compose.ui.res.painterResource
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.style.TextAlign
+import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.unit.dp
+import androidx.lifecycle.viewmodel.compose.viewModel
+import com.example.e04sumcalculator.ui.theme.E04SumCalculatorTheme
+import com.notkamui.keval.keval
+import kotlinx.coroutines.coroutineScope
+import kotlinx.coroutines.currentCoroutineContext
+import kotlinx.coroutines.launch
+import java.math.RoundingMode
+import kotlin.coroutines.CoroutineContext
+
+
+class MainActivity : ComponentActivity() {
+ @OptIn(ExperimentalMaterial3WindowSizeClassApi::class)
+ override fun onCreate(savedInstanceState: Bundle?) {
+ super.onCreate(savedInstanceState)
+
+ setContent {
+ E04SumCalculatorTheme {
+ val windowSize = calculateWindowSizeClass(this)
+ val calcModel: CalculatorViewModel = viewModel()
+ CalculatorApp(windowSize, calcModel)
+ }
+ }
+ }
+
+ override fun onDestroy() {
+ super.onDestroy()
+ println("App is closing")
+ }
+}
+
+
+@Composable
+fun CalculatorApp(windowSize: WindowSizeClass, calcViewModel: CalculatorViewModel = viewModel()) {
+ when (windowSize.widthSizeClass) {
+ WindowWidthSizeClass.Compact -> {
+ CalculatorPortrait(calcViewModel)
+ }
+// WindowWidthSizeClass.Medium -> {}
+// WindowWidthSizeClass.Expanded -> {}
+ else -> {
+ CalculatorLandscape(calcViewModel)
+ }
+ }
+}
+
+@Composable
+fun CalculatorPortrait(
+ calcViewModel: CalculatorViewModel = viewModel(),
+ modifier: Modifier = Modifier
+) {
+ val state by calcViewModel.state.collectAsState()
+ val scrollState = rememberScrollState()
+ val scope = rememberCoroutineScope()
+
+ Column(
+ modifier = Modifier
+ .fillMaxHeight()
+ .then(modifier)
+ ) {
+ Banner(imageSrc = R.drawable.math, modifier = Modifier.fillMaxHeight(1f))
+
+ Column(
+ Modifier.weight(1f),
+ verticalArrangement = Arrangement.Bottom
+ ) {
+ // Expressions
+ Column(
+ modifier = Modifier
+ .weight(1f)
+ .verticalScroll(scrollState),
+ verticalArrangement = Arrangement.Bottom
+ ) {
+ // Show previous expressions
+ for (expression in state.previousExpressions) {
+ Column(modifier = Modifier.fillMaxWidth()) {
+ Text(
+ text = "${expression.expression} = ${expression.result}",
+ textAlign = TextAlign.End,
+ modifier = Modifier
+ .fillMaxWidth()
+ .padding(16.dp, 8.dp)
+ )
+ Divider(thickness = 1.dp, color = Color.LightGray)
+ }
+ }
+ }
+
+ // Show current expression
+ Column(modifier = Modifier.fillMaxWidth()) {
+ Text(
+ // text = "${expression.expression} = ${expression.result}",
+ text = state.currentExpression.expression,
+ textAlign = TextAlign.End,
+ modifier = Modifier
+ .fillMaxWidth()
+ .padding(16.dp, 8.dp)
+ )
+ Divider(thickness = 1.dp, color = Color.Gray)
+ }
+
+ // Keys
+ Column(
+ verticalArrangement = Arrangement.Bottom,
+ modifier = Modifier
+ .wrapContentHeight()
+ .padding(16.dp, 8.dp)
+ ) {
+ Row(
+ modifier = Modifier.fillMaxWidth(),
+ horizontalArrangement = Arrangement.spacedBy(8.dp)
+ ) {
+ Button(
+ onClick = { calcViewModel.onKeyPressed("7") },
+ modifier = Modifier.weight(1f)
+ ) {
+ Text("7")
+ }
+ Button(
+ onClick = { calcViewModel.onKeyPressed("8") },
+ modifier = Modifier.weight(1f)
+ ) {
+ Text("8")
+ }
+ Button(
+ onClick = { calcViewModel.onKeyPressed("9") },
+ modifier = Modifier.weight(1f)
+ ) {
+ Text("9")
+ }
+ Button(
+ onClick = { calcViewModel.onKeyPressed("*") },
+ modifier = Modifier.weight(1f)
+ ) {
+ Text("*")
+ }
+ }
+ Row(
+ modifier = Modifier.fillMaxWidth(),
+ horizontalArrangement = Arrangement.spacedBy(8.dp)
+ ) {
+ Button(
+ onClick = { calcViewModel.onKeyPressed("4") },
+ modifier = Modifier.weight(1f)
+ ) {
+ Text("4")
+ }
+ Button(
+ onClick = { calcViewModel.onKeyPressed("5") },
+ modifier = Modifier.weight(1f)
+ ) {
+ Text("5")
+ }
+ Button(
+ onClick = { calcViewModel.onKeyPressed("6") },
+ modifier = Modifier.weight(1f)
+ ) {
+ Text("6")
+ }
+ Button(
+ onClick = { calcViewModel.onKeyPressed("-") },
+ modifier = Modifier.weight(1f)
+ ) {
+ Text("-")
+ }
+ }
+ Row(
+ modifier = Modifier.fillMaxWidth(),
+ horizontalArrangement = Arrangement.spacedBy(8.dp)
+ ) {
+ Button(
+ onClick = { calcViewModel.onKeyPressed("1") },
+ modifier = Modifier.weight(1f)
+ ) {
+ Text("1")
+ }
+ Button(
+ onClick = { calcViewModel.onKeyPressed("2") },
+ modifier = Modifier.weight(1f)
+ ) {
+ Text("2")
+ }
+ Button(
+ onClick = { calcViewModel.onKeyPressed("3") },
+ modifier = Modifier.weight(1f)
+ ) {
+ Text("3")
+ }
+ Button(
+ onClick = { calcViewModel.onKeyPressed("+") },
+ modifier = Modifier.weight(1f)
+ ) {
+ Text("+")
+ }
+ }
+ Row(
+ modifier = Modifier.fillMaxWidth(),
+ horizontalArrangement = Arrangement.spacedBy(8.dp)
+ ) {
+ Row(modifier = Modifier.weight(1f)) {
+ Button(
+ modifier = Modifier.weight(1f),
+ onClick = { calcViewModel.onKeyPressed("0") }) {
+ Text("0")
+ }
+ }
+ Row(
+ modifier = Modifier.weight(1f),
+ horizontalArrangement = Arrangement.spacedBy(8.dp)
+ ) {
+ Button(
+ onClick = { calcViewModel.onKeyPressed("C") },
+ modifier = Modifier.weight(1f)
+ ) {
+ Text("C")
+ }
+ Button(
+ onClick = {
+ calcViewModel.onKeyPressed("=")
+ scope.launch {
+ while (scrollState.canScrollForward) {
+ scrollState.scrollBy(20f)
+ }
+ }
+ },
+ modifier = Modifier.weight(1f)
+ ) {
+ Text("=")
+ }
+ }
+ }
+ }
+ }
+
+ }
+}
+
+@Composable
+fun CalculatorLandscape(
+ calcViewModel: CalculatorViewModel = viewModel(),
+ modifier: Modifier = Modifier
+) {
+ val state by calcViewModel.state.collectAsState()
+ val scrollState = rememberScrollState()
+ val scope = rememberCoroutineScope()
+
+ Column(
+ modifier = Modifier
+ .fillMaxHeight()
+ .then(modifier)
+ ) {
+ Column(
+ Modifier.weight(1f),
+ verticalArrangement = Arrangement.Bottom
+ ) {
+ // Expressions
+ Column(
+ modifier = Modifier
+ .weight(1f)
+ .verticalScroll(scrollState),
+ verticalArrangement = Arrangement.Bottom
+ ) {
+ // Show previous expressions
+ for (expression in state.previousExpressions) {
+ Column(modifier = Modifier.fillMaxWidth()) {
+ Text(
+ text = "${expression.expression} = ${expression.result}",
+ textAlign = TextAlign.End,
+ modifier = Modifier
+ .fillMaxWidth()
+ .padding(16.dp, 8.dp)
+ )
+ Divider(thickness = 1.dp, color = Color.LightGray)
+ }
+ }
+ }
+
+ // Show current expression
+ Column(modifier = Modifier.fillMaxWidth()) {
+ Text(
+ text = state.currentExpression.expression,
+ textAlign = TextAlign.End,
+ modifier = Modifier
+ .fillMaxWidth()
+ .padding(16.dp, 8.dp)
+ )
+ Divider(thickness = 1.dp, color = Color.Gray)
+ }
+
+ // Keys
+ Column(
+ verticalArrangement = Arrangement.Bottom,
+ modifier = Modifier
+ .wrapContentHeight()
+ .padding(16.dp, 8.dp)
+ ) {
+ Row(
+ modifier = Modifier.fillMaxWidth(),
+ horizontalArrangement = Arrangement.spacedBy(8.dp)
+ ) {
+ Button(
+ onClick = { calcViewModel.onKeyPressed("(") },
+ modifier = Modifier.weight(1f)
+ ) {
+ Text("(")
+ }
+ Button(
+ onClick = { calcViewModel.onKeyPressed(")") },
+ modifier = Modifier.weight(1f)
+ ) {
+ Text(")")
+ }
+ Button(
+ onClick = { calcViewModel.onKeyPressed("<=") },
+ modifier = Modifier.weight(1f)
+ ) {
+ Text("<=")
+ }
+ Button(
+ onClick = { calcViewModel.onKeyPressed("7") },
+ modifier = Modifier.weight(1f)
+ ) {
+ Text("7")
+ }
+ Button(
+ onClick = { calcViewModel.onKeyPressed("8") },
+ modifier = Modifier.weight(1f)
+ ) {
+ Text("8")
+ }
+ Button(
+ onClick = { calcViewModel.onKeyPressed("9") },
+ modifier = Modifier.weight(1f)
+ ) {
+ Text("9")
+ }
+ Button(
+ onClick = { calcViewModel.onKeyPressed("*") },
+ modifier = Modifier.weight(1f)
+ ) {
+ Text("*")
+ }
+ }
+ Row(
+ modifier = Modifier.fillMaxWidth(),
+ horizontalArrangement = Arrangement.spacedBy(8.dp)
+ ) {
+
+ Button(
+ onClick = { calcViewModel.onKeyPressed("SIN") },
+ modifier = Modifier.weight(1f)
+ ) {
+ Text("SIN")
+ }
+ Button(
+ onClick = { calcViewModel.onKeyPressed("COS") },
+ modifier = Modifier.weight(1f)
+ ) {
+ Text("COS")
+ }
+ Button(
+ onClick = { calcViewModel.onKeyPressed("e") },
+ modifier = Modifier.weight(1f)
+ ) {
+ Text("e")
+ }
+ Button(
+ onClick = { calcViewModel.onKeyPressed("4") },
+ modifier = Modifier.weight(1f)
+ ) {
+ Text("4")
+ }
+ Button(
+ onClick = { calcViewModel.onKeyPressed("5") },
+ modifier = Modifier.weight(1f)
+ ) {
+ Text("5")
+ }
+ Button(
+ onClick = { calcViewModel.onKeyPressed("6") },
+ modifier = Modifier.weight(1f)
+ ) {
+ Text("6")
+ }
+ Button(
+ onClick = { calcViewModel.onKeyPressed("-") },
+ modifier = Modifier.weight(1f)
+ ) {
+ Text("-")
+ }
+ }
+ Row(
+ modifier = Modifier.fillMaxWidth(),
+ horizontalArrangement = Arrangement.spacedBy(8.dp)
+ ) {
+ Button(
+ onClick = { calcViewModel.onKeyPressed("SINH") },
+ modifier = Modifier.weight(1f)
+ ) {
+ Text("SINH")
+ }
+ Button(
+ onClick = { calcViewModel.onKeyPressed("COSH") },
+ modifier = Modifier.weight(1f)
+ ) {
+ Text("COSH")
+ }
+ Button(
+ onClick = { calcViewModel.onKeyPressed("^") },
+ modifier = Modifier.weight(1f)
+ ) {
+ Text("^")
+ }
+ Button(
+ onClick = { calcViewModel.onKeyPressed("1") },
+ modifier = Modifier.weight(1f)
+ ) {
+ Text("1")
+ }
+ Button(
+ onClick = { calcViewModel.onKeyPressed("2") },
+ modifier = Modifier.weight(1f)
+ ) {
+ Text("2")
+ }
+ Button(
+ onClick = { calcViewModel.onKeyPressed("3") },
+ modifier = Modifier.weight(1f)
+ ) {
+ Text("3")
+ }
+ Button(
+ onClick = { calcViewModel.onKeyPressed("+") },
+ modifier = Modifier.weight(1f)
+ ) {
+ Text("+")
+ }
+ }
+ Row(
+ modifier = Modifier.fillMaxWidth(),
+ horizontalArrangement = Arrangement.spacedBy(8.dp)
+ ) {
+ Button(
+ onClick = { calcViewModel.onKeyPressed("C") },
+ modifier = Modifier.weight(2f)
+ ) {
+ Text("C")
+ }
+ Button(
+ modifier = Modifier.weight(1f),
+ onClick = { calcViewModel.onKeyPressed("PI") }) {
+ Text("PI")
+ }
+ Button(
+ modifier = Modifier.weight(1f),
+ onClick = { calcViewModel.onKeyPressed("0") }) {
+ Text("0")
+ }
+ Button(
+ modifier = Modifier.weight(1f),
+ onClick = { calcViewModel.onKeyPressed(".") }) {
+ Text(".")
+ }
+ Button(
+ onClick = { calcViewModel.onKeyPressed("/") },
+ modifier = Modifier.weight(1f)
+ ) {
+ Text("/")
+ }
+ Button(
+ onClick = {
+ calcViewModel.onKeyPressed("=")
+ scope.launch {
+ while (scrollState.canScrollForward) {
+ scrollState.scrollBy(20f)
+ }
+ }
+ },
+ modifier = Modifier.weight(1f)
+ ) {
+ Text("=")
+ }
+ }
+ }
+ }
+ }
+}
+
+@Preview(showBackground = true)
+@Composable
+fun CalculatorPortraitPreview() {
+ E04SumCalculatorTheme {
+ CalculatorPortrait()
+ }
+}
+
+@Preview(showBackground = true, device = "spec:parent=pixel_5,orientation=landscape")
+@Composable
+fun CalculatorLandscapePreview() {
+ E04SumCalculatorTheme {
+ CalculatorLandscape()
+ }
+}
+
+@Composable
+fun Banner(@DrawableRes imageSrc: Int, modifier: Modifier = Modifier) {
+ Image(
+ painter = painterResource(id = imageSrc),
+ contentDescription = stringResource(R.string.banner_content_description),
+ contentScale = ContentScale.Crop,
+ modifier = Modifier
+ .aspectRatio(16f / 9f)
+ .fillMaxWidth()
+ .then(modifier)
+ )
+}
+
+@Preview
+@Composable
+fun BannerPreview() {
+ Banner(R.drawable.math)
+}
\ No newline at end of file
diff --git a/E04SumCalculator/app/src/main/java/com/example/e04sumcalculator/ui/theme/Color.kt b/E04SumCalculator/app/src/main/java/com/example/e04sumcalculator/ui/theme/Color.kt
new file mode 100644
index 0000000000000000000000000000000000000000..b04b5d8fbc4b4b693d8cf8227d4660785095d87e
--- /dev/null
+++ b/E04SumCalculator/app/src/main/java/com/example/e04sumcalculator/ui/theme/Color.kt
@@ -0,0 +1,11 @@
+package com.example.e04sumcalculator.ui.theme
+
+import androidx.compose.ui.graphics.Color
+
+val Purple80 = Color(0xFFD0BCFF)
+val PurpleGrey80 = Color(0xFFCCC2DC)
+val Pink80 = Color(0xFFEFB8C8)
+
+val Purple40 = Color(0xFF6650a4)
+val PurpleGrey40 = Color(0xFF625b71)
+val Pink40 = Color(0xFF7D5260)
\ No newline at end of file
diff --git a/E04SumCalculator/app/src/main/java/com/example/e04sumcalculator/ui/theme/Theme.kt b/E04SumCalculator/app/src/main/java/com/example/e04sumcalculator/ui/theme/Theme.kt
new file mode 100644
index 0000000000000000000000000000000000000000..adbf84b871962b8d5adb7374f2943fb00db7bd22
--- /dev/null
+++ b/E04SumCalculator/app/src/main/java/com/example/e04sumcalculator/ui/theme/Theme.kt
@@ -0,0 +1,70 @@
+package com.example.e04sumcalculator.ui.theme
+
+import android.app.Activity
+import android.os.Build
+import androidx.compose.foundation.isSystemInDarkTheme
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.darkColorScheme
+import androidx.compose.material3.dynamicDarkColorScheme
+import androidx.compose.material3.dynamicLightColorScheme
+import androidx.compose.material3.lightColorScheme
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.SideEffect
+import androidx.compose.ui.graphics.toArgb
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.platform.LocalView
+import androidx.core.view.WindowCompat
+
+private val DarkColorScheme = darkColorScheme(
+ primary = Purple80,
+ secondary = PurpleGrey80,
+ tertiary = Pink80
+)
+
+private val LightColorScheme = lightColorScheme(
+ primary = Purple40,
+ secondary = PurpleGrey40,
+ tertiary = Pink40
+
+ /* Other default colors to override
+ background = Color(0xFFFFFBFE),
+ surface = Color(0xFFFFFBFE),
+ onPrimary = Color.White,
+ onSecondary = Color.White,
+ onTertiary = Color.White,
+ onBackground = Color(0xFF1C1B1F),
+ onSurface = Color(0xFF1C1B1F),
+ */
+)
+
+@Composable
+fun E04SumCalculatorTheme(
+ darkTheme: Boolean = isSystemInDarkTheme(),
+ // Dynamic color is available on Android 12+
+ dynamicColor: Boolean = true,
+ content: @Composable () -> Unit
+) {
+ val colorScheme = when {
+ dynamicColor && Build.VERSION.SDK_INT >= Build.VERSION_CODES.S -> {
+ val context = LocalContext.current
+ if (darkTheme) dynamicDarkColorScheme(context) else dynamicLightColorScheme(context)
+ }
+
+ darkTheme -> DarkColorScheme
+ else -> LightColorScheme
+ }
+ val view = LocalView.current
+ if (!view.isInEditMode) {
+ SideEffect {
+ val window = (view.context as Activity).window
+ window.statusBarColor = colorScheme.primary.toArgb()
+ WindowCompat.getInsetsController(window, view).isAppearanceLightStatusBars = darkTheme
+ }
+ }
+
+ MaterialTheme(
+ colorScheme = colorScheme,
+ typography = Typography,
+ content = content
+ )
+}
\ No newline at end of file
diff --git a/E04SumCalculator/app/src/main/java/com/example/e04sumcalculator/ui/theme/Type.kt b/E04SumCalculator/app/src/main/java/com/example/e04sumcalculator/ui/theme/Type.kt
new file mode 100644
index 0000000000000000000000000000000000000000..33e07f9329acb88f318c3d52f9d5d7e042d2215f
--- /dev/null
+++ b/E04SumCalculator/app/src/main/java/com/example/e04sumcalculator/ui/theme/Type.kt
@@ -0,0 +1,34 @@
+package com.example.e04sumcalculator.ui.theme
+
+import androidx.compose.material3.Typography
+import androidx.compose.ui.text.TextStyle
+import androidx.compose.ui.text.font.FontFamily
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.sp
+
+// Set of Material typography styles to start with
+val Typography = Typography(
+ bodyLarge = TextStyle(
+ fontFamily = FontFamily.Default,
+ fontWeight = FontWeight.Normal,
+ fontSize = 16.sp,
+ lineHeight = 24.sp,
+ letterSpacing = 0.5.sp
+ )
+ /* Other default text styles to override
+ titleLarge = TextStyle(
+ fontFamily = FontFamily.Default,
+ fontWeight = FontWeight.Normal,
+ fontSize = 22.sp,
+ lineHeight = 28.sp,
+ letterSpacing = 0.sp
+ ),
+ labelSmall = TextStyle(
+ fontFamily = FontFamily.Default,
+ fontWeight = FontWeight.Medium,
+ fontSize = 11.sp,
+ lineHeight = 16.sp,
+ letterSpacing = 0.5.sp
+ )
+ */
+)
\ No newline at end of file
diff --git a/E04SumCalculator/app/src/main/res/drawable/ic_launcher_background.xml b/E04SumCalculator/app/src/main/res/drawable/ic_launcher_background.xml
new file mode 100644
index 0000000000000000000000000000000000000000..07d5da9cbf141911847041df5d7b87f0dd5ef9d4
--- /dev/null
+++ b/E04SumCalculator/app/src/main/res/drawable/ic_launcher_background.xml
@@ -0,0 +1,170 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+ android:width="108dp"
+ android:height="108dp"
+ android:viewportWidth="108"
+ android:viewportHeight="108">
+ <path
+ android:fillColor="#3DDC84"
+ android:pathData="M0,0h108v108h-108z" />
+ <path
+ android:fillColor="#00000000"
+ android:pathData="M9,0L9,108"
+ android:strokeWidth="0.8"
+ android:strokeColor="#33FFFFFF" />
+ <path
+ android:fillColor="#00000000"
+ android:pathData="M19,0L19,108"
+ android:strokeWidth="0.8"
+ android:strokeColor="#33FFFFFF" />
+ <path
+ android:fillColor="#00000000"
+ android:pathData="M29,0L29,108"
+ android:strokeWidth="0.8"
+ android:strokeColor="#33FFFFFF" />
+ <path
+ android:fillColor="#00000000"
+ android:pathData="M39,0L39,108"
+ android:strokeWidth="0.8"
+ android:strokeColor="#33FFFFFF" />
+ <path
+ android:fillColor="#00000000"
+ android:pathData="M49,0L49,108"
+ android:strokeWidth="0.8"
+ android:strokeColor="#33FFFFFF" />
+ <path
+ android:fillColor="#00000000"
+ android:pathData="M59,0L59,108"
+ android:strokeWidth="0.8"
+ android:strokeColor="#33FFFFFF" />
+ <path
+ android:fillColor="#00000000"
+ android:pathData="M69,0L69,108"
+ android:strokeWidth="0.8"
+ android:strokeColor="#33FFFFFF" />
+ <path
+ android:fillColor="#00000000"
+ android:pathData="M79,0L79,108"
+ android:strokeWidth="0.8"
+ android:strokeColor="#33FFFFFF" />
+ <path
+ android:fillColor="#00000000"
+ android:pathData="M89,0L89,108"
+ android:strokeWidth="0.8"
+ android:strokeColor="#33FFFFFF" />
+ <path
+ android:fillColor="#00000000"
+ android:pathData="M99,0L99,108"
+ android:strokeWidth="0.8"
+ android:strokeColor="#33FFFFFF" />
+ <path
+ android:fillColor="#00000000"
+ android:pathData="M0,9L108,9"
+ android:strokeWidth="0.8"
+ android:strokeColor="#33FFFFFF" />
+ <path
+ android:fillColor="#00000000"
+ android:pathData="M0,19L108,19"
+ android:strokeWidth="0.8"
+ android:strokeColor="#33FFFFFF" />
+ <path
+ android:fillColor="#00000000"
+ android:pathData="M0,29L108,29"
+ android:strokeWidth="0.8"
+ android:strokeColor="#33FFFFFF" />
+ <path
+ android:fillColor="#00000000"
+ android:pathData="M0,39L108,39"
+ android:strokeWidth="0.8"
+ android:strokeColor="#33FFFFFF" />
+ <path
+ android:fillColor="#00000000"
+ android:pathData="M0,49L108,49"
+ android:strokeWidth="0.8"
+ android:strokeColor="#33FFFFFF" />
+ <path
+ android:fillColor="#00000000"
+ android:pathData="M0,59L108,59"
+ android:strokeWidth="0.8"
+ android:strokeColor="#33FFFFFF" />
+ <path
+ android:fillColor="#00000000"
+ android:pathData="M0,69L108,69"
+ android:strokeWidth="0.8"
+ android:strokeColor="#33FFFFFF" />
+ <path
+ android:fillColor="#00000000"
+ android:pathData="M0,79L108,79"
+ android:strokeWidth="0.8"
+ android:strokeColor="#33FFFFFF" />
+ <path
+ android:fillColor="#00000000"
+ android:pathData="M0,89L108,89"
+ android:strokeWidth="0.8"
+ android:strokeColor="#33FFFFFF" />
+ <path
+ android:fillColor="#00000000"
+ android:pathData="M0,99L108,99"
+ android:strokeWidth="0.8"
+ android:strokeColor="#33FFFFFF" />
+ <path
+ android:fillColor="#00000000"
+ android:pathData="M19,29L89,29"
+ android:strokeWidth="0.8"
+ android:strokeColor="#33FFFFFF" />
+ <path
+ android:fillColor="#00000000"
+ android:pathData="M19,39L89,39"
+ android:strokeWidth="0.8"
+ android:strokeColor="#33FFFFFF" />
+ <path
+ android:fillColor="#00000000"
+ android:pathData="M19,49L89,49"
+ android:strokeWidth="0.8"
+ android:strokeColor="#33FFFFFF" />
+ <path
+ android:fillColor="#00000000"
+ android:pathData="M19,59L89,59"
+ android:strokeWidth="0.8"
+ android:strokeColor="#33FFFFFF" />
+ <path
+ android:fillColor="#00000000"
+ android:pathData="M19,69L89,69"
+ android:strokeWidth="0.8"
+ android:strokeColor="#33FFFFFF" />
+ <path
+ android:fillColor="#00000000"
+ android:pathData="M19,79L89,79"
+ android:strokeWidth="0.8"
+ android:strokeColor="#33FFFFFF" />
+ <path
+ android:fillColor="#00000000"
+ android:pathData="M29,19L29,89"
+ android:strokeWidth="0.8"
+ android:strokeColor="#33FFFFFF" />
+ <path
+ android:fillColor="#00000000"
+ android:pathData="M39,19L39,89"
+ android:strokeWidth="0.8"
+ android:strokeColor="#33FFFFFF" />
+ <path
+ android:fillColor="#00000000"
+ android:pathData="M49,19L49,89"
+ android:strokeWidth="0.8"
+ android:strokeColor="#33FFFFFF" />
+ <path
+ android:fillColor="#00000000"
+ android:pathData="M59,19L59,89"
+ android:strokeWidth="0.8"
+ android:strokeColor="#33FFFFFF" />
+ <path
+ android:fillColor="#00000000"
+ android:pathData="M69,19L69,89"
+ android:strokeWidth="0.8"
+ android:strokeColor="#33FFFFFF" />
+ <path
+ android:fillColor="#00000000"
+ android:pathData="M79,19L79,89"
+ android:strokeWidth="0.8"
+ android:strokeColor="#33FFFFFF" />
+</vector>
diff --git a/E04SumCalculator/app/src/main/res/drawable/ic_launcher_foreground.xml b/E04SumCalculator/app/src/main/res/drawable/ic_launcher_foreground.xml
new file mode 100644
index 0000000000000000000000000000000000000000..2b068d11462a4b96669193de13a711a3a36220a0
--- /dev/null
+++ b/E04SumCalculator/app/src/main/res/drawable/ic_launcher_foreground.xml
@@ -0,0 +1,30 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+ xmlns:aapt="http://schemas.android.com/aapt"
+ android:width="108dp"
+ android:height="108dp"
+ android:viewportWidth="108"
+ android:viewportHeight="108">
+ <path android:pathData="M31,63.928c0,0 6.4,-11 12.1,-13.1c7.2,-2.6 26,-1.4 26,-1.4l38.1,38.1L107,108.928l-32,-1L31,63.928z">
+ <aapt:attr name="android:fillColor">
+ <gradient
+ android:endX="85.84757"
+ android:endY="92.4963"
+ android:startX="42.9492"
+ android:startY="49.59793"
+ android:type="linear">
+ <item
+ android:color="#44000000"
+ android:offset="0.0" />
+ <item
+ android:color="#00000000"
+ android:offset="1.0" />
+ </gradient>
+ </aapt:attr>
+ </path>
+ <path
+ android:fillColor="#FFFFFF"
+ android:fillType="nonZero"
+ android:pathData="M65.3,45.828l3.8,-6.6c0.2,-0.4 0.1,-0.9 -0.3,-1.1c-0.4,-0.2 -0.9,-0.1 -1.1,0.3l-3.9,6.7c-6.3,-2.8 -13.4,-2.8 -19.7,0l-3.9,-6.7c-0.2,-0.4 -0.7,-0.5 -1.1,-0.3C38.8,38.328 38.7,38.828 38.9,39.228l3.8,6.6C36.2,49.428 31.7,56.028 31,63.928h46C76.3,56.028 71.8,49.428 65.3,45.828zM43.4,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2c-0.3,-0.7 -0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C45.3,56.528 44.5,57.328 43.4,57.328L43.4,57.328zM64.6,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2s-0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C66.5,56.528 65.6,57.328 64.6,57.328L64.6,57.328z"
+ android:strokeWidth="1"
+ android:strokeColor="#00000000" />
+</vector>
\ No newline at end of file
diff --git a/E04SumCalculator/app/src/main/res/drawable/math.jpg b/E04SumCalculator/app/src/main/res/drawable/math.jpg
new file mode 100644
index 0000000000000000000000000000000000000000..6f670bf7cccac1c11a644478535a676047fb2e8a
Binary files /dev/null and b/E04SumCalculator/app/src/main/res/drawable/math.jpg differ
diff --git a/E04SumCalculator/app/src/main/res/mipmap-anydpi/ic_launcher.xml b/E04SumCalculator/app/src/main/res/mipmap-anydpi/ic_launcher.xml
new file mode 100644
index 0000000000000000000000000000000000000000..6f3b755bf50c6b03d8714a9c6184705e6a08389f
--- /dev/null
+++ b/E04SumCalculator/app/src/main/res/mipmap-anydpi/ic_launcher.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+ <background android:drawable="@drawable/ic_launcher_background" />
+ <foreground android:drawable="@drawable/ic_launcher_foreground" />
+ <monochrome android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
\ No newline at end of file
diff --git a/E04SumCalculator/app/src/main/res/mipmap-anydpi/ic_launcher_round.xml b/E04SumCalculator/app/src/main/res/mipmap-anydpi/ic_launcher_round.xml
new file mode 100644
index 0000000000000000000000000000000000000000..6f3b755bf50c6b03d8714a9c6184705e6a08389f
--- /dev/null
+++ b/E04SumCalculator/app/src/main/res/mipmap-anydpi/ic_launcher_round.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+ <background android:drawable="@drawable/ic_launcher_background" />
+ <foreground android:drawable="@drawable/ic_launcher_foreground" />
+ <monochrome android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
\ No newline at end of file
diff --git a/E04SumCalculator/app/src/main/res/mipmap-hdpi/ic_launcher.webp b/E04SumCalculator/app/src/main/res/mipmap-hdpi/ic_launcher.webp
new file mode 100644
index 0000000000000000000000000000000000000000..c209e78ecd372343283f4157dcfd918ec5165bb3
Binary files /dev/null and b/E04SumCalculator/app/src/main/res/mipmap-hdpi/ic_launcher.webp differ
diff --git a/E04SumCalculator/app/src/main/res/mipmap-hdpi/ic_launcher_round.webp b/E04SumCalculator/app/src/main/res/mipmap-hdpi/ic_launcher_round.webp
new file mode 100644
index 0000000000000000000000000000000000000000..b2dfe3d1ba5cf3ee31b3ecc1ced89044a1f3b7a9
Binary files /dev/null and b/E04SumCalculator/app/src/main/res/mipmap-hdpi/ic_launcher_round.webp differ
diff --git a/E04SumCalculator/app/src/main/res/mipmap-mdpi/ic_launcher.webp b/E04SumCalculator/app/src/main/res/mipmap-mdpi/ic_launcher.webp
new file mode 100644
index 0000000000000000000000000000000000000000..4f0f1d64e58ba64d180ce43ee13bf9a17835fbca
Binary files /dev/null and b/E04SumCalculator/app/src/main/res/mipmap-mdpi/ic_launcher.webp differ
diff --git a/E04SumCalculator/app/src/main/res/mipmap-mdpi/ic_launcher_round.webp b/E04SumCalculator/app/src/main/res/mipmap-mdpi/ic_launcher_round.webp
new file mode 100644
index 0000000000000000000000000000000000000000..62b611da081676d42f6c3f78a2c91e7bcedddedb
Binary files /dev/null and b/E04SumCalculator/app/src/main/res/mipmap-mdpi/ic_launcher_round.webp differ
diff --git a/E04SumCalculator/app/src/main/res/mipmap-xhdpi/ic_launcher.webp b/E04SumCalculator/app/src/main/res/mipmap-xhdpi/ic_launcher.webp
new file mode 100644
index 0000000000000000000000000000000000000000..948a3070fe34c611c42c0d3ad3013a0dce358be0
Binary files /dev/null and b/E04SumCalculator/app/src/main/res/mipmap-xhdpi/ic_launcher.webp differ
diff --git a/E04SumCalculator/app/src/main/res/mipmap-xhdpi/ic_launcher_round.webp b/E04SumCalculator/app/src/main/res/mipmap-xhdpi/ic_launcher_round.webp
new file mode 100644
index 0000000000000000000000000000000000000000..1b9a6956b3acdc11f40ce2bb3f6efbd845cc243f
Binary files /dev/null and b/E04SumCalculator/app/src/main/res/mipmap-xhdpi/ic_launcher_round.webp differ
diff --git a/E04SumCalculator/app/src/main/res/mipmap-xxhdpi/ic_launcher.webp b/E04SumCalculator/app/src/main/res/mipmap-xxhdpi/ic_launcher.webp
new file mode 100644
index 0000000000000000000000000000000000000000..28d4b77f9f036a47549d47db79c16788749dca10
Binary files /dev/null and b/E04SumCalculator/app/src/main/res/mipmap-xxhdpi/ic_launcher.webp differ
diff --git a/E04SumCalculator/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.webp b/E04SumCalculator/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.webp
new file mode 100644
index 0000000000000000000000000000000000000000..9287f5083623b375139afb391af71cc533a7dd37
Binary files /dev/null and b/E04SumCalculator/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.webp differ
diff --git a/E04SumCalculator/app/src/main/res/mipmap-xxxhdpi/ic_launcher.webp b/E04SumCalculator/app/src/main/res/mipmap-xxxhdpi/ic_launcher.webp
new file mode 100644
index 0000000000000000000000000000000000000000..aa7d6427e6fa1074b79ccd52ef67ac15c5637e85
Binary files /dev/null and b/E04SumCalculator/app/src/main/res/mipmap-xxxhdpi/ic_launcher.webp differ
diff --git a/E04SumCalculator/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.webp b/E04SumCalculator/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.webp
new file mode 100644
index 0000000000000000000000000000000000000000..9126ae37cbc3587421d6889eadd1d91fbf1994d4
Binary files /dev/null and b/E04SumCalculator/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.webp differ
diff --git a/E04SumCalculator/app/src/main/res/values/colors.xml b/E04SumCalculator/app/src/main/res/values/colors.xml
new file mode 100644
index 0000000000000000000000000000000000000000..f8c6127d327620c93d2b2d00342a68e97b98a48d
--- /dev/null
+++ b/E04SumCalculator/app/src/main/res/values/colors.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+ <color name="purple_200">#FFBB86FC</color>
+ <color name="purple_500">#FF6200EE</color>
+ <color name="purple_700">#FF3700B3</color>
+ <color name="teal_200">#FF03DAC5</color>
+ <color name="teal_700">#FF018786</color>
+ <color name="black">#FF000000</color>
+ <color name="white">#FFFFFFFF</color>
+</resources>
\ No newline at end of file
diff --git a/E04SumCalculator/app/src/main/res/values/strings.xml b/E04SumCalculator/app/src/main/res/values/strings.xml
new file mode 100644
index 0000000000000000000000000000000000000000..1aa6446a5a797ab9afac4c10d01eef2923370db3
--- /dev/null
+++ b/E04SumCalculator/app/src/main/res/values/strings.xml
@@ -0,0 +1,4 @@
+<resources>
+ <string name="app_name">E04 Sum Calculator</string>
+ <string name="banner_content_description">Banner Image</string>
+</resources>
\ No newline at end of file
diff --git a/E04SumCalculator/app/src/main/res/values/themes.xml b/E04SumCalculator/app/src/main/res/values/themes.xml
new file mode 100644
index 0000000000000000000000000000000000000000..3f44e512ab4a09bf8c4da16b8bf2aa6256902360
--- /dev/null
+++ b/E04SumCalculator/app/src/main/res/values/themes.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+ <style name="Theme.E04SumCalculator" parent="android:Theme.Material.Light.NoActionBar" />
+</resources>
\ No newline at end of file
diff --git a/E04SumCalculator/app/src/main/res/xml/backup_rules.xml b/E04SumCalculator/app/src/main/res/xml/backup_rules.xml
new file mode 100644
index 0000000000000000000000000000000000000000..fa0f996d2c2a6bdd11f5371de4268c8389d6c720
--- /dev/null
+++ b/E04SumCalculator/app/src/main/res/xml/backup_rules.xml
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+ Sample backup rules file; uncomment and customize as necessary.
+ See https://developer.android.com/guide/topics/data/autobackup
+ for details.
+ Note: This file is ignored for devices older that API 31
+ See https://developer.android.com/about/versions/12/backup-restore
+-->
+<full-backup-content>
+ <!--
+ <include domain="sharedpref" path="."/>
+ <exclude domain="sharedpref" path="device.xml"/>
+-->
+</full-backup-content>
\ No newline at end of file
diff --git a/E04SumCalculator/app/src/main/res/xml/data_extraction_rules.xml b/E04SumCalculator/app/src/main/res/xml/data_extraction_rules.xml
new file mode 100644
index 0000000000000000000000000000000000000000..9ee9997b0b4726e57c27b2f7b21462b604ff8a88
--- /dev/null
+++ b/E04SumCalculator/app/src/main/res/xml/data_extraction_rules.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+ Sample data extraction rules file; uncomment and customize as necessary.
+ See https://developer.android.com/about/versions/12/backup-restore#xml-changes
+ for details.
+-->
+<data-extraction-rules>
+ <cloud-backup>
+ <!-- TODO: Use <include> and <exclude> to control what is backed up.
+ <include .../>
+ <exclude .../>
+ -->
+ </cloud-backup>
+ <!--
+ <device-transfer>
+ <include .../>
+ <exclude .../>
+ </device-transfer>
+ -->
+</data-extraction-rules>
\ No newline at end of file
diff --git a/E04SumCalculator/app/src/test/java/com/example/e04sumcalculator/ExampleUnitTest.kt b/E04SumCalculator/app/src/test/java/com/example/e04sumcalculator/ExampleUnitTest.kt
new file mode 100644
index 0000000000000000000000000000000000000000..8daab846d1b398a44669cd6ef3250bd468b6e9b2
--- /dev/null
+++ b/E04SumCalculator/app/src/test/java/com/example/e04sumcalculator/ExampleUnitTest.kt
@@ -0,0 +1,17 @@
+package com.example.e04sumcalculator
+
+import org.junit.Test
+
+import org.junit.Assert.*
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * See [testing documentation](http://d.android.com/tools/testing).
+ */
+class ExampleUnitTest {
+ @Test
+ fun addition_isCorrect() {
+ assertEquals(4, 2 + 2)
+ }
+}
\ No newline at end of file
diff --git a/E04SumCalculator/build.gradle.kts b/E04SumCalculator/build.gradle.kts
new file mode 100644
index 0000000000000000000000000000000000000000..bea45c98fc9880ef6b88f435745493d67dbfeac4
--- /dev/null
+++ b/E04SumCalculator/build.gradle.kts
@@ -0,0 +1,5 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+plugins {
+ id("com.android.application") version "8.2.0-rc03" apply false
+ id("org.jetbrains.kotlin.android") version "1.9.0" apply false
+}
diff --git a/E04SumCalculator/gradle.properties b/E04SumCalculator/gradle.properties
new file mode 100644
index 0000000000000000000000000000000000000000..3c5031eb7d63f785752b1914cc8692a453d1cc63
--- /dev/null
+++ b/E04SumCalculator/gradle.properties
@@ -0,0 +1,23 @@
+# Project-wide Gradle settings.
+# IDE (e.g. Android Studio) users:
+# Gradle settings configured through the IDE *will override*
+# any settings specified in this file.
+# For more details on how to configure your build environment visit
+# http://www.gradle.org/docs/current/userguide/build_environment.html
+# Specifies the JVM arguments used for the daemon process.
+# The setting is particularly useful for tweaking memory settings.
+org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
+# When configured, Gradle will run in incubating parallel mode.
+# This option should only be used with decoupled projects. More details, visit
+# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
+# org.gradle.parallel=true
+# AndroidX package structure to make it clearer which packages are bundled with the
+# Android operating system, and which are packaged with your app's APK
+# https://developer.android.com/topic/libraries/support-library/androidx-rn
+android.useAndroidX=true
+# Kotlin code style for this project: "official" or "obsolete":
+kotlin.code.style=official
+# Enables namespacing of each library's R class so that its R class includes only the
+# resources declared in the library itself and none from the library's dependencies,
+# thereby reducing the size of the R class for that library
+android.nonTransitiveRClass=true
\ No newline at end of file
diff --git a/E04SumCalculator/gradle/wrapper/gradle-wrapper.jar b/E04SumCalculator/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000000000000000000000000000000000000..e708b1c023ec8b20f512888fe07c5bd3ff77bb8f
Binary files /dev/null and b/E04SumCalculator/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/E04SumCalculator/gradle/wrapper/gradle-wrapper.properties b/E04SumCalculator/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000000000000000000000000000000000000..b9e5d242604f8c5d1893efc626d9afc432581107
--- /dev/null
+++ b/E04SumCalculator/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+#Sat Nov 25 15:08:38 GMT 2023
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.2-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
diff --git a/E04SumCalculator/gradlew b/E04SumCalculator/gradlew
new file mode 100755
index 0000000000000000000000000000000000000000..4f906e0c811fc9e230eb44819f509cd0627f2600
--- /dev/null
+++ b/E04SumCalculator/gradlew
@@ -0,0 +1,185 @@
+#!/usr/bin/env sh
+
+#
+# Copyright 2015 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+##
+## Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+ ls=`ls -ld "$PRG"`
+ link=`expr "$ls" : '.*-> \(.*\)$'`
+ if expr "$link" : '/.*' > /dev/null; then
+ PRG="$link"
+ else
+ PRG=`dirname "$PRG"`"/$link"
+ fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+ echo "$*"
+}
+
+die () {
+ echo
+ echo "$*"
+ echo
+ exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+ CYGWIN* )
+ cygwin=true
+ ;;
+ Darwin* )
+ darwin=true
+ ;;
+ MINGW* )
+ msys=true
+ ;;
+ NONSTOP* )
+ nonstop=true
+ ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+ if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+ # IBM's JDK on AIX uses strange locations for the executables
+ JAVACMD="$JAVA_HOME/jre/sh/java"
+ else
+ JAVACMD="$JAVA_HOME/bin/java"
+ fi
+ if [ ! -x "$JAVACMD" ] ; then
+ die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+ fi
+else
+ JAVACMD="java"
+ which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+ MAX_FD_LIMIT=`ulimit -H -n`
+ if [ $? -eq 0 ] ; then
+ if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+ MAX_FD="$MAX_FD_LIMIT"
+ fi
+ ulimit -n $MAX_FD
+ if [ $? -ne 0 ] ; then
+ warn "Could not set maximum file descriptor limit: $MAX_FD"
+ fi
+ else
+ warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+ fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+ GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
+ APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+ CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+
+ JAVACMD=`cygpath --unix "$JAVACMD"`
+
+ # We build the pattern for arguments to be converted via cygpath
+ ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+ SEP=""
+ for dir in $ROOTDIRSRAW ; do
+ ROOTDIRS="$ROOTDIRS$SEP$dir"
+ SEP="|"
+ done
+ OURCYGPATTERN="(^($ROOTDIRS))"
+ # Add a user-defined pattern to the cygpath arguments
+ if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+ OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+ fi
+ # Now convert the arguments - kludge to limit ourselves to /bin/sh
+ i=0
+ for arg in "$@" ; do
+ CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+ CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option
+
+ if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition
+ eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+ else
+ eval `echo args$i`="\"$arg\""
+ fi
+ i=`expr $i + 1`
+ done
+ case $i in
+ 0) set -- ;;
+ 1) set -- "$args0" ;;
+ 2) set -- "$args0" "$args1" ;;
+ 3) set -- "$args0" "$args1" "$args2" ;;
+ 4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+ 5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+ 6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+ 7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+ 8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+ 9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+ esac
+fi
+
+# Escape application args
+save () {
+ for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+ echo " "
+}
+APP_ARGS=`save "$@"`
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+exec "$JAVACMD" "$@"
diff --git a/E04SumCalculator/gradlew.bat b/E04SumCalculator/gradlew.bat
new file mode 100644
index 0000000000000000000000000000000000000000..ac1b06f93825db68fb0c0b5150917f340eaa5d02
--- /dev/null
+++ b/E04SumCalculator/gradlew.bat
@@ -0,0 +1,89 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/E04SumCalculator/settings.gradle.kts b/E04SumCalculator/settings.gradle.kts
new file mode 100644
index 0000000000000000000000000000000000000000..f76f97bd9d693f7aa265934eab352e6242666dbd
--- /dev/null
+++ b/E04SumCalculator/settings.gradle.kts
@@ -0,0 +1,17 @@
+pluginManagement {
+ repositories {
+ google()
+ mavenCentral()
+ gradlePluginPortal()
+ }
+}
+dependencyResolutionManagement {
+ repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
+ repositories {
+ google()
+ mavenCentral()
+ }
+}
+
+rootProject.name = "E04 Sum Calculator"
+include(":app")