diff --git a/Challenge 2/.gitignore b/Challenge 2/.gitignore
new file mode 100644
index 0000000..5edb4ee
--- /dev/null
+++ b/Challenge 2/.gitignore
@@ -0,0 +1,10 @@
+*.iml
+.gradle
+/local.properties
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild
diff --git a/Challenge 2/.idea/caches/build_file_checksums.ser b/Challenge 2/.idea/caches/build_file_checksums.ser
new file mode 100644
index 0000000..d6c353c
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diff --git a/Challenge 2/.idea/codeStyles/Project.xml b/Challenge 2/.idea/codeStyles/Project.xml
new file mode 100644
index 0000000..30aa626
--- /dev/null
+++ b/Challenge 2/.idea/codeStyles/Project.xml
@@ -0,0 +1,29 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
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+
+
+
+
+
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+
+
\ No newline at end of file
diff --git a/Challenge 2/.idea/gradle.xml b/Challenge 2/.idea/gradle.xml
new file mode 100644
index 0000000..7ac24c7
--- /dev/null
+++ b/Challenge 2/.idea/gradle.xml
@@ -0,0 +1,18 @@
+
+
+
+
+
+
\ No newline at end of file
diff --git a/Challenge 2/.idea/misc.xml b/Challenge 2/.idea/misc.xml
new file mode 100644
index 0000000..99202cc
--- /dev/null
+++ b/Challenge 2/.idea/misc.xml
@@ -0,0 +1,34 @@
+
+
+
+
+
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\ No newline at end of file
diff --git a/Challenge 2/.idea/runConfigurations.xml b/Challenge 2/.idea/runConfigurations.xml
new file mode 100644
index 0000000..7f68460
--- /dev/null
+++ b/Challenge 2/.idea/runConfigurations.xml
@@ -0,0 +1,12 @@
+
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/Challenge 2/app/.gitignore b/Challenge 2/app/.gitignore
new file mode 100644
index 0000000..796b96d
--- /dev/null
+++ b/Challenge 2/app/.gitignore
@@ -0,0 +1 @@
+/build
diff --git a/Challenge 2/app/build.gradle b/Challenge 2/app/build.gradle
new file mode 100644
index 0000000..611b39c
--- /dev/null
+++ b/Challenge 2/app/build.gradle
@@ -0,0 +1,28 @@
+apply plugin: 'com.android.application'
+
+android {
+ compileSdkVersion 28
+ defaultConfig {
+ applicationId "com.example.gerry.gameofappschallenge"
+ minSdkVersion 19
+ targetSdkVersion 28
+ versionCode 1
+ versionName "1.0"
+ testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+ }
+ buildTypes {
+ release {
+ minifyEnabled false
+ proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+ }
+ }
+}
+
+dependencies {
+ implementation fileTree(dir: 'libs', include: ['*.jar'])
+ implementation 'com.android.support:appcompat-v7:28.0.0'
+ implementation 'com.android.support.constraint:constraint-layout:1.1.3'
+ testImplementation 'junit:junit:4.12'
+ androidTestImplementation 'com.android.support.test:runner:1.0.2'
+ androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
+}
diff --git a/Challenge 2/app/proguard-rules.pro b/Challenge 2/app/proguard-rules.pro
new file mode 100644
index 0000000..f1b4245
--- /dev/null
+++ b/Challenge 2/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
diff --git a/Challenge 2/app/src/androidTest/java/com/example/gerry/gameofappschallenge/ExampleInstrumentedTest.java b/Challenge 2/app/src/androidTest/java/com/example/gerry/gameofappschallenge/ExampleInstrumentedTest.java
new file mode 100644
index 0000000..d1689a9
--- /dev/null
+++ b/Challenge 2/app/src/androidTest/java/com/example/gerry/gameofappschallenge/ExampleInstrumentedTest.java
@@ -0,0 +1,26 @@
+package com.example.gerry.gameofappschallenge;
+
+import android.content.Context;
+import android.support.test.InstrumentationRegistry;
+import android.support.test.runner.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * @see Testing documentation
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+ @Test
+ public void useAppContext() {
+ // Context of the app under test.
+ Context appContext = InstrumentationRegistry.getTargetContext();
+
+ assertEquals("com.example.gerry.gameofappschallenge", appContext.getPackageName());
+ }
+}
diff --git a/Challenge 2/app/src/main/AndroidManifest.xml b/Challenge 2/app/src/main/AndroidManifest.xml
new file mode 100644
index 0000000..0aa3503
--- /dev/null
+++ b/Challenge 2/app/src/main/AndroidManifest.xml
@@ -0,0 +1,28 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/Challenge 2/app/src/main/java/com/example/gerry/gameofappschallenge/MainActivity.java b/Challenge 2/app/src/main/java/com/example/gerry/gameofappschallenge/MainActivity.java
new file mode 100644
index 0000000..a2d00e2
--- /dev/null
+++ b/Challenge 2/app/src/main/java/com/example/gerry/gameofappschallenge/MainActivity.java
@@ -0,0 +1,44 @@
+package com.example.gerry.gameofappschallenge;
+
+import android.app.Activity;
+import android.content.Intent;
+import android.support.v7.app.AppCompatActivity;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.Button;
+import android.widget.ImageButton;
+
+public class MainActivity extends AppCompatActivity {
+
+ private ImageButton macarons;
+
+ @Override
+ protected void onCreate(Bundle savedInstanceState) {
+ super.onCreate(savedInstanceState);
+ setContentView(R.layout.activity_main);
+ }
+
+ public void blackHoleActivity (View view) {
+ Intent intent = new Intent(this, blackHole.class);
+ startActivity(intent);
+ overridePendingTransition(android.R.anim.fade_in, android.R.anim.fade_out);
+ }
+ public void neutronStarActivity (View view) {
+ Intent intent = new Intent(this, neutronStar.class);
+ startActivity(intent);
+ overridePendingTransition(android.R.anim.fade_in, android.R.anim.fade_out);
+
+ }
+ public void superNovaActivity (View view) {
+ Intent intent = new Intent(this, superNova.class);
+ startActivity(intent);
+ overridePendingTransition(android.R.anim.fade_in, android.R.anim.fade_out);
+
+ }
+ public void macaronActivity (View view) {
+ Intent intent = new Intent(this, macaron.class);
+ startActivity(intent);
+ overridePendingTransition(android.R.anim.fade_in, android.R.anim.fade_out);
+
+ }
+}
diff --git a/Challenge 2/app/src/main/java/com/example/gerry/gameofappschallenge/blackHole.java b/Challenge 2/app/src/main/java/com/example/gerry/gameofappschallenge/blackHole.java
new file mode 100644
index 0000000..aba48e6
--- /dev/null
+++ b/Challenge 2/app/src/main/java/com/example/gerry/gameofappschallenge/blackHole.java
@@ -0,0 +1,13 @@
+package com.example.gerry.gameofappschallenge;
+
+import android.support.v7.app.AppCompatActivity;
+import android.os.Bundle;
+
+public class blackHole extends AppCompatActivity {
+
+ @Override
+ protected void onCreate(Bundle savedInstanceState) {
+ super.onCreate(savedInstanceState);
+ setContentView(R.layout.activity_black_hole);
+ }
+}
diff --git a/Challenge 2/app/src/main/java/com/example/gerry/gameofappschallenge/macaron.java b/Challenge 2/app/src/main/java/com/example/gerry/gameofappschallenge/macaron.java
new file mode 100644
index 0000000..8ff07a4
--- /dev/null
+++ b/Challenge 2/app/src/main/java/com/example/gerry/gameofappschallenge/macaron.java
@@ -0,0 +1,14 @@
+package com.example.gerry.gameofappschallenge;
+
+import android.os.Bundle;
+import android.app.Activity;
+
+public class macaron extends Activity {
+
+ @Override
+ protected void onCreate(Bundle savedInstanceState) {
+ super.onCreate(savedInstanceState);
+ setContentView(R.layout.activity_macaron);
+ }
+
+}
diff --git a/Challenge 2/app/src/main/java/com/example/gerry/gameofappschallenge/neutronStar.java b/Challenge 2/app/src/main/java/com/example/gerry/gameofappschallenge/neutronStar.java
new file mode 100644
index 0000000..7111d2e
--- /dev/null
+++ b/Challenge 2/app/src/main/java/com/example/gerry/gameofappschallenge/neutronStar.java
@@ -0,0 +1,13 @@
+package com.example.gerry.gameofappschallenge;
+
+import android.support.v7.app.AppCompatActivity;
+import android.os.Bundle;
+
+public class neutronStar extends AppCompatActivity {
+
+ @Override
+ protected void onCreate(Bundle savedInstanceState) {
+ super.onCreate(savedInstanceState);
+ setContentView(R.layout.activity_neutron_star);
+ }
+}
diff --git a/Challenge 2/app/src/main/java/com/example/gerry/gameofappschallenge/superNova.java b/Challenge 2/app/src/main/java/com/example/gerry/gameofappschallenge/superNova.java
new file mode 100644
index 0000000..a5f0ec0
--- /dev/null
+++ b/Challenge 2/app/src/main/java/com/example/gerry/gameofappschallenge/superNova.java
@@ -0,0 +1,13 @@
+package com.example.gerry.gameofappschallenge;
+
+import android.support.v7.app.AppCompatActivity;
+import android.os.Bundle;
+
+public class superNova extends AppCompatActivity {
+
+ @Override
+ protected void onCreate(Bundle savedInstanceState) {
+ super.onCreate(savedInstanceState);
+ setContentView(R.layout.activity_super_nova);
+ }
+}
diff --git a/Challenge 2/app/src/main/res/drawable-v24/ic_launcher_foreground.xml b/Challenge 2/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
new file mode 100644
index 0000000..c7bd21d
--- /dev/null
+++ b/Challenge 2/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
@@ -0,0 +1,34 @@
+
+
+
+
+
+
+
+
+
+
+
diff --git a/Challenge 2/app/src/main/res/drawable/blackhole.jpg b/Challenge 2/app/src/main/res/drawable/blackhole.jpg
new file mode 100644
index 0000000..9e2eb70
Binary files /dev/null and b/Challenge 2/app/src/main/res/drawable/blackhole.jpg differ
diff --git a/Challenge 2/app/src/main/res/drawable/ic_launcher_background.xml b/Challenge 2/app/src/main/res/drawable/ic_launcher_background.xml
new file mode 100644
index 0000000..d5fccc5
--- /dev/null
+++ b/Challenge 2/app/src/main/res/drawable/ic_launcher_background.xml
@@ -0,0 +1,170 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/Challenge 2/app/src/main/res/drawable/macarons.jpg b/Challenge 2/app/src/main/res/drawable/macarons.jpg
new file mode 100644
index 0000000..3cec78d
Binary files /dev/null and b/Challenge 2/app/src/main/res/drawable/macarons.jpg differ
diff --git a/Challenge 2/app/src/main/res/drawable/neutronstar.jpg b/Challenge 2/app/src/main/res/drawable/neutronstar.jpg
new file mode 100644
index 0000000..e3cc3b7
Binary files /dev/null and b/Challenge 2/app/src/main/res/drawable/neutronstar.jpg differ
diff --git a/Challenge 2/app/src/main/res/drawable/supernova.jpg b/Challenge 2/app/src/main/res/drawable/supernova.jpg
new file mode 100644
index 0000000..16cd704
Binary files /dev/null and b/Challenge 2/app/src/main/res/drawable/supernova.jpg differ
diff --git a/Challenge 2/app/src/main/res/layout/activity_black_hole.xml b/Challenge 2/app/src/main/res/layout/activity_black_hole.xml
new file mode 100644
index 0000000..dc861fe
--- /dev/null
+++ b/Challenge 2/app/src/main/res/layout/activity_black_hole.xml
@@ -0,0 +1,36 @@
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/Challenge 2/app/src/main/res/layout/activity_macaron.xml b/Challenge 2/app/src/main/res/layout/activity_macaron.xml
new file mode 100644
index 0000000..b5b234e
--- /dev/null
+++ b/Challenge 2/app/src/main/res/layout/activity_macaron.xml
@@ -0,0 +1,38 @@
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/Challenge 2/app/src/main/res/layout/activity_main.xml b/Challenge 2/app/src/main/res/layout/activity_main.xml
new file mode 100644
index 0000000..d28bc0d
--- /dev/null
+++ b/Challenge 2/app/src/main/res/layout/activity_main.xml
@@ -0,0 +1,110 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/Challenge 2/app/src/main/res/layout/activity_nebula.xml b/Challenge 2/app/src/main/res/layout/activity_nebula.xml
new file mode 100644
index 0000000..c66c1f4
--- /dev/null
+++ b/Challenge 2/app/src/main/res/layout/activity_nebula.xml
@@ -0,0 +1,9 @@
+
+
+
+
\ No newline at end of file
diff --git a/Challenge 2/app/src/main/res/layout/activity_neutron_star.xml b/Challenge 2/app/src/main/res/layout/activity_neutron_star.xml
new file mode 100644
index 0000000..9f6ea71
--- /dev/null
+++ b/Challenge 2/app/src/main/res/layout/activity_neutron_star.xml
@@ -0,0 +1,37 @@
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/Challenge 2/app/src/main/res/layout/activity_super_nova.xml b/Challenge 2/app/src/main/res/layout/activity_super_nova.xml
new file mode 100644
index 0000000..bfeb7cf
--- /dev/null
+++ b/Challenge 2/app/src/main/res/layout/activity_super_nova.xml
@@ -0,0 +1,38 @@
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/Challenge 2/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml b/Challenge 2/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
new file mode 100644
index 0000000..eca70cf
--- /dev/null
+++ b/Challenge 2/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
@@ -0,0 +1,5 @@
+
+
+
+
+
\ No newline at end of file
diff --git a/Challenge 2/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml b/Challenge 2/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
new file mode 100644
index 0000000..eca70cf
--- /dev/null
+++ b/Challenge 2/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
@@ -0,0 +1,5 @@
+
+
+
+
+
\ No newline at end of file
diff --git a/Challenge 2/app/src/main/res/mipmap-hdpi/ic_launcher.png b/Challenge 2/app/src/main/res/mipmap-hdpi/ic_launcher.png
new file mode 100644
index 0000000..a2f5908
Binary files /dev/null and b/Challenge 2/app/src/main/res/mipmap-hdpi/ic_launcher.png differ
diff --git a/Challenge 2/app/src/main/res/mipmap-hdpi/ic_launcher_round.png b/Challenge 2/app/src/main/res/mipmap-hdpi/ic_launcher_round.png
new file mode 100644
index 0000000..1b52399
Binary files /dev/null and b/Challenge 2/app/src/main/res/mipmap-hdpi/ic_launcher_round.png differ
diff --git a/Challenge 2/app/src/main/res/mipmap-mdpi/ic_launcher.png b/Challenge 2/app/src/main/res/mipmap-mdpi/ic_launcher.png
new file mode 100644
index 0000000..ff10afd
Binary files /dev/null and b/Challenge 2/app/src/main/res/mipmap-mdpi/ic_launcher.png differ
diff --git a/Challenge 2/app/src/main/res/mipmap-mdpi/ic_launcher_round.png b/Challenge 2/app/src/main/res/mipmap-mdpi/ic_launcher_round.png
new file mode 100644
index 0000000..115a4c7
Binary files /dev/null and b/Challenge 2/app/src/main/res/mipmap-mdpi/ic_launcher_round.png differ
diff --git a/Challenge 2/app/src/main/res/mipmap-xhdpi/ic_launcher.png b/Challenge 2/app/src/main/res/mipmap-xhdpi/ic_launcher.png
new file mode 100644
index 0000000..dcd3cd8
Binary files /dev/null and b/Challenge 2/app/src/main/res/mipmap-xhdpi/ic_launcher.png differ
diff --git a/Challenge 2/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png b/Challenge 2/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png
new file mode 100644
index 0000000..459ca60
Binary files /dev/null and b/Challenge 2/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png differ
diff --git a/Challenge 2/app/src/main/res/mipmap-xxhdpi/ic_launcher.png b/Challenge 2/app/src/main/res/mipmap-xxhdpi/ic_launcher.png
new file mode 100644
index 0000000..8ca12fe
Binary files /dev/null and b/Challenge 2/app/src/main/res/mipmap-xxhdpi/ic_launcher.png differ
diff --git a/Challenge 2/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png b/Challenge 2/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png
new file mode 100644
index 0000000..8e19b41
Binary files /dev/null and b/Challenge 2/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png differ
diff --git a/Challenge 2/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png b/Challenge 2/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png
new file mode 100644
index 0000000..b824ebd
Binary files /dev/null and b/Challenge 2/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png differ
diff --git a/Challenge 2/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png b/Challenge 2/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png
new file mode 100644
index 0000000..4c19a13
Binary files /dev/null and b/Challenge 2/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png differ
diff --git a/Challenge 2/app/src/main/res/values/colors.xml b/Challenge 2/app/src/main/res/values/colors.xml
new file mode 100644
index 0000000..3ab3e9c
--- /dev/null
+++ b/Challenge 2/app/src/main/res/values/colors.xml
@@ -0,0 +1,6 @@
+
+
+ #3F51B5
+ #303F9F
+ #FF4081
+
diff --git a/Challenge 2/app/src/main/res/values/strings.xml b/Challenge 2/app/src/main/res/values/strings.xml
new file mode 100644
index 0000000..a6e2380
--- /dev/null
+++ b/Challenge 2/app/src/main/res/values/strings.xml
@@ -0,0 +1,4 @@
+
+ GameOfApps Challenge
+ macaron
+
diff --git a/Challenge 2/app/src/main/res/values/styles.xml b/Challenge 2/app/src/main/res/values/styles.xml
new file mode 100644
index 0000000..5e404d9
--- /dev/null
+++ b/Challenge 2/app/src/main/res/values/styles.xml
@@ -0,0 +1,11 @@
+
+
+
+
+
+
diff --git a/Challenge 2/app/src/test/java/com/example/gerry/gameofappschallenge/ExampleUnitTest.java b/Challenge 2/app/src/test/java/com/example/gerry/gameofappschallenge/ExampleUnitTest.java
new file mode 100644
index 0000000..9780595
--- /dev/null
+++ b/Challenge 2/app/src/test/java/com/example/gerry/gameofappschallenge/ExampleUnitTest.java
@@ -0,0 +1,17 @@
+package com.example.gerry.gameofappschallenge;
+
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * @see Testing documentation
+ */
+public class ExampleUnitTest {
+ @Test
+ public void addition_isCorrect() {
+ assertEquals(4, 2 + 2);
+ }
+}
\ No newline at end of file
diff --git a/Challenge 2/assignment-java-2 b/Challenge 2/assignment-java-2
new file mode 160000
index 0000000..73247e6
--- /dev/null
+++ b/Challenge 2/assignment-java-2
@@ -0,0 +1 @@
+Subproject commit 73247e6e49b2f41007c189e1ef93ef27646c95ff
diff --git a/Challenge 2/build.gradle b/Challenge 2/build.gradle
new file mode 100644
index 0000000..077cb2f
--- /dev/null
+++ b/Challenge 2/build.gradle
@@ -0,0 +1,27 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+
+buildscript {
+
+ repositories {
+ google()
+ jcenter()
+ }
+ dependencies {
+ classpath 'com.android.tools.build:gradle:3.1.4'
+
+
+ // NOTE: Do not place your application dependencies here; they belong
+ // in the individual module build.gradle files
+ }
+}
+
+allprojects {
+ repositories {
+ google()
+ jcenter()
+ }
+}
+
+task clean(type: Delete) {
+ delete rootProject.buildDir
+}
diff --git a/Challenge 2/gradle.properties b/Challenge 2/gradle.properties
new file mode 100644
index 0000000..743d692
--- /dev/null
+++ b/Challenge 2/gradle.properties
@@ -0,0 +1,13 @@
+# 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=-Xmx1536m
+# 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
diff --git a/Challenge 2/gradle/wrapper/gradle-wrapper.jar b/Challenge 2/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000..7a3265e
Binary files /dev/null and b/Challenge 2/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/Challenge 2/gradle/wrapper/gradle-wrapper.properties b/Challenge 2/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000..54aa937
--- /dev/null
+++ b/Challenge 2/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+#Mon May 13 11:58:49 PDT 2019
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.4-all.zip
diff --git a/Challenge 2/gradlew b/Challenge 2/gradlew
new file mode 100644
index 0000000..cccdd3d
--- /dev/null
+++ b/Challenge 2/gradlew
@@ -0,0 +1,172 @@
+#!/usr/bin/env sh
+
+##############################################################################
+##
+## 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 "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+ echo "$*"
+}
+
+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, switch paths to Windows format before running java
+if $cygwin ; then
+ APP_HOME=`cygpath --path --mixed "$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`="\"$arg\""
+ fi
+ i=$((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"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+ cd "$(dirname "$0")"
+fi
+
+exec "$JAVACMD" "$@"
diff --git a/Challenge 2/gradlew.bat b/Challenge 2/gradlew.bat
new file mode 100644
index 0000000..f955316
--- /dev/null
+++ b/Challenge 2/gradlew.bat
@@ -0,0 +1,84 @@
+@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 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=
+
+@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 init
+
+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 init
+
+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
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+: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 %CMD_LINE_ARGS%
+
+: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/Challenge 2/settings.gradle b/Challenge 2/settings.gradle
new file mode 100644
index 0000000..e7b4def
--- /dev/null
+++ b/Challenge 2/settings.gradle
@@ -0,0 +1 @@
+include ':app'
diff --git a/Q1.java b/Q1.java
new file mode 100644
index 0000000..3256c2d
--- /dev/null
+++ b/Q1.java
@@ -0,0 +1,44 @@
+package Q1;
+
+/**
+ *
+ * @author Gerry Zhang
+ * May 13th, 2019
+ */
+import java.util.Arrays;
+
+public class Q1 {
+ private static void findPairs(int[] testArray, int targetSum) {
+
+ // storeArray will store previous printed values so that it can be used to remove duplicates.
+ int storeArray[];
+ storeArray = new int[testArray.length];
+
+ // Take the ith element and search through the entire array for values that sum to target
+ for (int i = 0; i < testArray.length; ++i) {
+ for (int j = i; j < testArray.length; ++j) {
+
+ // Check if the elements of the array sum to the target. I am going to assume that we do not include elements of the same index.
+ if (testArray[i] + testArray[j] == targetSum && i != j) {
+
+ // Check the store array to see if the values have been printed already.
+ if (storeArray[0] != testArray[i] && storeArray[1] != testArray[j])
+ // Check the complement so that we don't print duplicates.
+ if (storeArray[0] != testArray[j] && storeArray[1] != testArray[j])
+
+ // Print the values that equal the target sum and store them in the array.
+ System.out.println("(" + testArray[i] + ", " + testArray[j] + ")");
+ storeArray[0] = testArray[i];
+ storeArray[1] = testArray[j];
+ }
+ }
+ }
+ }
+
+ public static void main(String[] args){
+ int[] testArray = {2, 4, 5, 1, 3, 5, 4};
+ int targetSum = 6;
+
+ findPairs(testArray, targetSum);
+ }
+}
diff --git a/Q2.java b/Q2.java
new file mode 100644
index 0000000..9656935
--- /dev/null
+++ b/Q2.java
@@ -0,0 +1,42 @@
+package q2;
+
+/**
+ *
+ * @author Gerry
+ */
+public class Q2 {
+
+ public static boolean isPalindrome(String testString) {
+ // Find length of the string and declare a counter variable
+ int stringLength = testString.length();
+ int count = 0;
+
+ // For loop checks through the first and last element of the string, then it moves up one digit and the last digit moves down one
+ // When the length of the string is odd, integer division floors the value.
+ // We do this as we do not need to check the middle element for an odd length string
+ for (int i = 0; i < (stringLength / 2); ++i) {
+ if (testString.charAt(0 + i) == testString.charAt(stringLength - i - 1)) {
+ ++count;
+ }
+ else {
+ System.out.println("False");
+ return false;
+ }
+ }
+ // Count keeps track of the number of matching characters, if it equals stringLength/2, then it is a palindrome.
+ if (count == (stringLength / 2) ){
+ System.out.println("True");
+ return true;
+ }
+ return false;
+ }
+
+
+ public static void main(String[] args) {
+ String test = "radar";
+
+ isPalindrome(test);
+
+ }
+
+}