diff --git a/Challenges/.gitignore b/Challenges/.gitignore
new file mode 100644
index 0000000..603b140
--- /dev/null
+++ b/Challenges/.gitignore
@@ -0,0 +1,14 @@
+*.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
diff --git a/Challenges/.project b/Challenges/.project
new file mode 100644
index 0000000..1e6f5b0
--- /dev/null
+++ b/Challenges/.project
@@ -0,0 +1,17 @@
+
+
+ ImageViewer
+ Project ImageViewer created by Buildship.
+
+
+
+
+ org.eclipse.buildship.core.gradleprojectbuilder
+
+
+
+
+
+ org.eclipse.buildship.core.gradleprojectnature
+
+
diff --git a/Challenges/.settings/org.eclipse.buildship.core.prefs b/Challenges/.settings/org.eclipse.buildship.core.prefs
new file mode 100644
index 0000000..ef3d374
--- /dev/null
+++ b/Challenges/.settings/org.eclipse.buildship.core.prefs
@@ -0,0 +1,13 @@
+arguments=
+auto.sync=false
+build.scans.enabled=false
+connection.gradle.distribution=GRADLE_DISTRIBUTION(WRAPPER)
+connection.project.dir=
+eclipse.preferences.version=1
+gradle.user.home=
+java.home=C\:/Program Files/Java/jdk-14.0.1
+jvm.arguments=
+offline.mode=false
+override.workspace.settings=true
+show.console.view=true
+show.executions.view=true
diff --git a/Challenges/app/.gitignore b/Challenges/app/.gitignore
new file mode 100644
index 0000000..796b96d
--- /dev/null
+++ b/Challenges/app/.gitignore
@@ -0,0 +1 @@
+/build
diff --git a/Challenges/app/build.gradle b/Challenges/app/build.gradle
new file mode 100644
index 0000000..5bf2742
--- /dev/null
+++ b/Challenges/app/build.gradle
@@ -0,0 +1,34 @@
+apply plugin: 'com.android.application'
+
+android {
+ compileSdkVersion 29
+ buildToolsVersion "29.0.2"
+
+ defaultConfig {
+ applicationId "com.example.imageviewer"
+ minSdkVersion 16
+ targetSdkVersion 29
+ versionCode 1
+ versionName "1.0"
+
+ testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+ }
+
+ buildTypes {
+ release {
+ minifyEnabled false
+ proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+ }
+ }
+
+}
+
+dependencies {
+ implementation fileTree(dir: 'libs', include: ['*.jar'])
+
+ implementation 'androidx.appcompat:appcompat:1.1.0'
+ implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
+ testImplementation 'junit:junit:4.12'
+ androidTestImplementation 'androidx.test.ext:junit:1.1.1'
+ androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
+}
diff --git a/Challenges/app/proguard-rules.pro b/Challenges/app/proguard-rules.pro
new file mode 100644
index 0000000..f1b4245
--- /dev/null
+++ b/Challenges/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/Challenges/app/src/androidTest/java/com/example/imageviewer/ExampleInstrumentedTest.java b/Challenges/app/src/androidTest/java/com/example/imageviewer/ExampleInstrumentedTest.java
new file mode 100644
index 0000000..ebececf
--- /dev/null
+++ b/Challenges/app/src/androidTest/java/com/example/imageviewer/ExampleInstrumentedTest.java
@@ -0,0 +1,27 @@
+package com.example.imageviewer;
+
+import android.content.Context;
+
+import androidx.test.platform.app.InstrumentationRegistry;
+import androidx.test.ext.junit.runners.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.getInstrumentation().getTargetContext();
+
+ assertEquals("com.example.imageviewer", appContext.getPackageName());
+ }
+}
diff --git a/Challenges/app/src/main/AndroidManifest.xml b/Challenges/app/src/main/AndroidManifest.xml
new file mode 100644
index 0000000..f103c1b
--- /dev/null
+++ b/Challenges/app/src/main/AndroidManifest.xml
@@ -0,0 +1,24 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/Challenges/app/src/main/java/com/example/imageviewer/Image.java b/Challenges/app/src/main/java/com/example/imageviewer/Image.java
new file mode 100644
index 0000000..007207d
--- /dev/null
+++ b/Challenges/app/src/main/java/com/example/imageviewer/Image.java
@@ -0,0 +1,29 @@
+package com.example.imageviewer;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+import android.content.Intent;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.Button;
+
+public class Image extends AppCompatActivity {
+
+ @Override
+ protected void onCreate(Bundle savedInstanceState) {
+ super.onCreate(savedInstanceState);
+ setContentView(R.layout.activity_image);
+ Button backButton1 = findViewById(R.id.back_button1);
+ backButton1.setOnClickListener(new View.OnClickListener() {
+ @Override
+ public void onClick(View v) {
+ navigateToHome();
+ }
+ });
+ }
+ private void navigateToHome() {
+ Intent intent = new Intent(this, MainActivity.class);
+ startActivity(intent);
+
+ }
+}
diff --git a/Challenges/app/src/main/java/com/example/imageviewer/ImageThree.java b/Challenges/app/src/main/java/com/example/imageviewer/ImageThree.java
new file mode 100644
index 0000000..0ad6f04
--- /dev/null
+++ b/Challenges/app/src/main/java/com/example/imageviewer/ImageThree.java
@@ -0,0 +1,28 @@
+package com.example.imageviewer;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+import android.content.Intent;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.Button;
+
+public class ImageThree extends AppCompatActivity {
+
+ @Override
+ protected void onCreate(Bundle savedInstanceState) {
+ super.onCreate(savedInstanceState);
+ setContentView(R.layout.activity_image_three);
+ Button backButton3 = findViewById(R.id.back_button3);
+ backButton3.setOnClickListener(new View.OnClickListener() {
+ @Override
+ public void onClick(View v) {
+ navigateToHome();
+ }
+ });
+ }
+ private void navigateToHome() {
+ Intent intent = new Intent(this, MainActivity.class);
+ startActivity(intent);
+ }
+}
diff --git a/Challenges/app/src/main/java/com/example/imageviewer/ImageTwo.java b/Challenges/app/src/main/java/com/example/imageviewer/ImageTwo.java
new file mode 100644
index 0000000..3124f00
--- /dev/null
+++ b/Challenges/app/src/main/java/com/example/imageviewer/ImageTwo.java
@@ -0,0 +1,29 @@
+package com.example.imageviewer;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+import android.content.Intent;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.Button;
+
+public class ImageTwo extends AppCompatActivity {
+
+ @Override
+ protected void onCreate(Bundle savedInstanceState) {
+ super.onCreate(savedInstanceState);
+ setContentView(R.layout.activity_image_two);
+ Button backButton2 = findViewById(R.id.back_button2);
+ backButton2.setOnClickListener(new View.OnClickListener() {
+ @Override
+ public void onClick(View v) {
+ navigateToHome();
+ }
+ });
+ }
+ private void navigateToHome() {
+ Intent intent = new Intent(this, MainActivity.class);
+ startActivity(intent);
+
+ }
+}
diff --git a/Challenges/app/src/main/java/com/example/imageviewer/MainActivity.java b/Challenges/app/src/main/java/com/example/imageviewer/MainActivity.java
new file mode 100644
index 0000000..25b6bb0
--- /dev/null
+++ b/Challenges/app/src/main/java/com/example/imageviewer/MainActivity.java
@@ -0,0 +1,69 @@
+package com.example.imageviewer;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+import android.content.Intent;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.ImageButton;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+public class MainActivity extends AppCompatActivity {
+ private ImageButton button1;
+ private ImageButton button2;
+ private ImageButton button3;
+
+ @Override
+ protected void onCreate(Bundle savedInstanceState) {
+ super.onCreate(savedInstanceState);
+ setContentView(R.layout.activity_main);
+ imageButtonSetup();
+ //ImageButton 1
+ button1.setOnClickListener(new View.OnClickListener() {
+ @Override
+ public void onClick(View v) {
+ navigateToLupo();
+ }
+ });
+
+ //ImageButton 2
+ button2.setOnClickListener(new View.OnClickListener() {
+ @Override
+ public void onClick(View v) {
+ navigateToNinja();
+ }
+ });
+
+ //imageButton 3
+ button3.setOnClickListener(new View.OnClickListener() {
+ @Override
+ public void onClick(View v) {
+ navigateToPokimane();
+ }
+ });
+
+ }
+ private void imageButtonSetup() {
+ button1 = findViewById(R.id.button_lupo);
+ button2 = findViewById(R.id.button_ninja);
+ button3 = findViewById(R.id.button_pokimane);
+
+ }
+
+ private void navigateToLupo() {
+ Intent intent = new Intent(this, Image.class);
+ startActivity(intent);
+ }
+
+ private void navigateToNinja() {
+ Intent intent = new Intent(this, ImageTwo.class);
+ startActivity(intent);
+
+ }
+ private void navigateToPokimane() {
+ Intent intent = new Intent(this, ImageThree.class);
+ startActivity(intent);
+ }
+}
+
diff --git a/Challenges/app/src/main/res/drawable-v24/drlupo.png b/Challenges/app/src/main/res/drawable-v24/drlupo.png
new file mode 100644
index 0000000..898bc7c
Binary files /dev/null and b/Challenges/app/src/main/res/drawable-v24/drlupo.png differ
diff --git a/Challenges/app/src/main/res/drawable-v24/ic_launcher_foreground.xml b/Challenges/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
new file mode 100644
index 0000000..3990a15
--- /dev/null
+++ b/Challenges/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
@@ -0,0 +1,30 @@
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/Challenges/app/src/main/res/drawable-v24/ninja.png b/Challenges/app/src/main/res/drawable-v24/ninja.png
new file mode 100644
index 0000000..571a81a
Binary files /dev/null and b/Challenges/app/src/main/res/drawable-v24/ninja.png differ
diff --git a/Challenges/app/src/main/res/drawable-v24/pokimane.png b/Challenges/app/src/main/res/drawable-v24/pokimane.png
new file mode 100644
index 0000000..b8db8ed
Binary files /dev/null and b/Challenges/app/src/main/res/drawable-v24/pokimane.png differ
diff --git a/Challenges/app/src/main/res/drawable-v24/summit.png b/Challenges/app/src/main/res/drawable-v24/summit.png
new file mode 100644
index 0000000..1bdb53b
Binary files /dev/null and b/Challenges/app/src/main/res/drawable-v24/summit.png differ
diff --git a/Challenges/app/src/main/res/drawable/ic_launcher_background.xml b/Challenges/app/src/main/res/drawable/ic_launcher_background.xml
new file mode 100644
index 0000000..61bb79e
--- /dev/null
+++ b/Challenges/app/src/main/res/drawable/ic_launcher_background.xml
@@ -0,0 +1,170 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
diff --git a/Challenges/app/src/main/res/layout/activity_image.xml b/Challenges/app/src/main/res/layout/activity_image.xml
new file mode 100644
index 0000000..c5e843a
--- /dev/null
+++ b/Challenges/app/src/main/res/layout/activity_image.xml
@@ -0,0 +1,33 @@
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/Challenges/app/src/main/res/layout/activity_image_three.xml b/Challenges/app/src/main/res/layout/activity_image_three.xml
new file mode 100644
index 0000000..45c4290
--- /dev/null
+++ b/Challenges/app/src/main/res/layout/activity_image_three.xml
@@ -0,0 +1,32 @@
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/Challenges/app/src/main/res/layout/activity_image_two.xml b/Challenges/app/src/main/res/layout/activity_image_two.xml
new file mode 100644
index 0000000..c811ad2
--- /dev/null
+++ b/Challenges/app/src/main/res/layout/activity_image_two.xml
@@ -0,0 +1,32 @@
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/Challenges/app/src/main/res/layout/activity_main.xml b/Challenges/app/src/main/res/layout/activity_main.xml
new file mode 100644
index 0000000..5946734
--- /dev/null
+++ b/Challenges/app/src/main/res/layout/activity_main.xml
@@ -0,0 +1,85 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/Challenges/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml b/Challenges/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
new file mode 100644
index 0000000..03eed25
--- /dev/null
+++ b/Challenges/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
@@ -0,0 +1,5 @@
+
+
+
+
+
\ No newline at end of file
diff --git a/Challenges/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml b/Challenges/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
new file mode 100644
index 0000000..03eed25
--- /dev/null
+++ b/Challenges/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
@@ -0,0 +1,5 @@
+
+
+
+
+
\ No newline at end of file
diff --git a/Challenges/app/src/main/res/mipmap-hdpi/ic_launcher.png b/Challenges/app/src/main/res/mipmap-hdpi/ic_launcher.png
new file mode 100644
index 0000000..a571e60
Binary files /dev/null and b/Challenges/app/src/main/res/mipmap-hdpi/ic_launcher.png differ
diff --git a/Challenges/app/src/main/res/mipmap-hdpi/ic_launcher_round.png b/Challenges/app/src/main/res/mipmap-hdpi/ic_launcher_round.png
new file mode 100644
index 0000000..61da551
Binary files /dev/null and b/Challenges/app/src/main/res/mipmap-hdpi/ic_launcher_round.png differ
diff --git a/Challenges/app/src/main/res/mipmap-mdpi/ic_launcher.png b/Challenges/app/src/main/res/mipmap-mdpi/ic_launcher.png
new file mode 100644
index 0000000..c41dd28
Binary files /dev/null and b/Challenges/app/src/main/res/mipmap-mdpi/ic_launcher.png differ
diff --git a/Challenges/app/src/main/res/mipmap-mdpi/ic_launcher_round.png b/Challenges/app/src/main/res/mipmap-mdpi/ic_launcher_round.png
new file mode 100644
index 0000000..db5080a
Binary files /dev/null and b/Challenges/app/src/main/res/mipmap-mdpi/ic_launcher_round.png differ
diff --git a/Challenges/app/src/main/res/mipmap-xhdpi/ic_launcher.png b/Challenges/app/src/main/res/mipmap-xhdpi/ic_launcher.png
new file mode 100644
index 0000000..6dba46d
Binary files /dev/null and b/Challenges/app/src/main/res/mipmap-xhdpi/ic_launcher.png differ
diff --git a/Challenges/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png b/Challenges/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png
new file mode 100644
index 0000000..da31a87
Binary files /dev/null and b/Challenges/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png differ
diff --git a/Challenges/app/src/main/res/mipmap-xxhdpi/ic_launcher.png b/Challenges/app/src/main/res/mipmap-xxhdpi/ic_launcher.png
new file mode 100644
index 0000000..15ac681
Binary files /dev/null and b/Challenges/app/src/main/res/mipmap-xxhdpi/ic_launcher.png differ
diff --git a/Challenges/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png b/Challenges/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png
new file mode 100644
index 0000000..b216f2d
Binary files /dev/null and b/Challenges/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png differ
diff --git a/Challenges/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png b/Challenges/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png
new file mode 100644
index 0000000..f25a419
Binary files /dev/null and b/Challenges/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png differ
diff --git a/Challenges/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png b/Challenges/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png
new file mode 100644
index 0000000..e96783c
Binary files /dev/null and b/Challenges/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png differ
diff --git a/Challenges/app/src/main/res/values/colors.xml b/Challenges/app/src/main/res/values/colors.xml
new file mode 100644
index 0000000..3ec6675
--- /dev/null
+++ b/Challenges/app/src/main/res/values/colors.xml
@@ -0,0 +1,6 @@
+
+
+ #6200EE
+ #3700B3
+ #03DAC5
+
diff --git a/Challenges/app/src/main/res/values/strings.xml b/Challenges/app/src/main/res/values/strings.xml
new file mode 100644
index 0000000..c67b9d0
--- /dev/null
+++ b/Challenges/app/src/main/res/values/strings.xml
@@ -0,0 +1,3 @@
+
+ ImageViewer
+
diff --git a/Challenges/app/src/main/res/values/styles.xml b/Challenges/app/src/main/res/values/styles.xml
new file mode 100644
index 0000000..705be27
--- /dev/null
+++ b/Challenges/app/src/main/res/values/styles.xml
@@ -0,0 +1,11 @@
+
+
+
+
+
+
diff --git a/Challenges/app/src/test/java/com/example/imageviewer/ExampleUnitTest.java b/Challenges/app/src/test/java/com/example/imageviewer/ExampleUnitTest.java
new file mode 100644
index 0000000..c593477
--- /dev/null
+++ b/Challenges/app/src/test/java/com/example/imageviewer/ExampleUnitTest.java
@@ -0,0 +1,17 @@
+package com.example.imageviewer;
+
+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/Challenges/build.gradle b/Challenges/build.gradle
new file mode 100644
index 0000000..9494940
--- /dev/null
+++ b/Challenges/build.gradle
@@ -0,0 +1,29 @@
+// 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:3.6.1'
+
+
+ // 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/Challenges/challenge1.java b/Challenges/challenge1.java
new file mode 100644
index 0000000..5c5c193
--- /dev/null
+++ b/Challenges/challenge1.java
@@ -0,0 +1,47 @@
+import java.util.ArrayList;
+import java.util.Arrays;
+
+class challenge1 {
+
+ public static void main(String[] args) {
+ // Example values
+ int[] testArray = {2, 4, 5, 1, 3, 5, 4};
+ int targetSum = 6;
+
+ // Expected pairs are (to be printed on the console):
+ // (2, 4)
+ // (1, 5)
+
+ findPairs(testArray, targetSum);
+ }
+
+ public static void findPairs(int[] testArray, int targetSum) {
+ // Sort the test array
+ Arrays.sort(testArray);
+ // {1,2,3,4,4,5,5}
+ // Initalize start and end variables for the array
+ int s = 0;
+ int e = testArray.length - 1;
+ // While your end value is greater than your start value the loop will continue to look for pairs
+ while (s < e) {
+ int fSum = (testArray[s] + testArray[e]);
+ // If the sum is smaller than the target sum leftside will increment 1
+ if (fSum < targetSum) {
+ s++;
+ // If the sum is smaller than the target sum rightside will increment 1
+ } else if (fSum > targetSum) {
+ e--;
+ // If the sum equals to the target sum the pair will print and both the numbers will increment 1.
+ } else if (fSum == targetSum){
+ System.out.printf("(%d, %d)\n", testArray[s], testArray[e]);
+ e--;
+ s++;
+ }
+
+ }
+
+
+
+ }
+
+}
diff --git a/Challenges/challenge2.java b/Challenges/challenge2.java
new file mode 100644
index 0000000..8eed95e
--- /dev/null
+++ b/Challenges/challenge2.java
@@ -0,0 +1,38 @@
+import java.util.*;
+
+class challenge2 {
+
+ public static void main(String[] args) {
+ // Test string 1
+ String testString = "bob";
+ isPalindrome(testString);
+
+ // Test string 2
+ testString = "canada";
+ isPalindrome(testString);
+
+ }
+ // The method that will check if a word is a palindrome
+ static boolean isPalindrome(String testString) {
+
+ int strLength = testString.length();
+
+ // we only need to check half of the word.
+ for (int i = 0; i < strLength/2; i++) {
+ // compare the first letter of the word with the last and so on.
+ if (testString.charAt(i) != testString.charAt(strLength-i-1)){
+ System.out.println(testString + " is not a palindrome.");
+
+ return false;
+ }
+ }
+
+ System.out.println(testString + " is a palindrome.");
+
+ return true;
+
+
+ }
+
+
+}
\ No newline at end of file
diff --git a/Challenges/gradle.properties b/Challenges/gradle.properties
new file mode 100644
index 0000000..199d16e
--- /dev/null
+++ b/Challenges/gradle.properties
@@ -0,0 +1,20 @@
+# 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
+# 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
+# Automatically convert third-party libraries to use AndroidX
+android.enableJetifier=true
+
diff --git a/Challenges/gradle/wrapper/gradle-wrapper.jar b/Challenges/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000..f6b961f
Binary files /dev/null and b/Challenges/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/Challenges/gradle/wrapper/gradle-wrapper.properties b/Challenges/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000..75fb7ad
--- /dev/null
+++ b/Challenges/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+#Tue Jun 16 18:20:03 PDT 2020
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.6.4-all.zip
diff --git a/Challenges/gradlew b/Challenges/gradlew
new file mode 100644
index 0000000..cccdd3d
--- /dev/null
+++ b/Challenges/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/Challenges/gradlew.bat b/Challenges/gradlew.bat
new file mode 100644
index 0000000..f955316
--- /dev/null
+++ b/Challenges/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/Challenges/settings.gradle b/Challenges/settings.gradle
new file mode 100644
index 0000000..47235da
--- /dev/null
+++ b/Challenges/settings.gradle
@@ -0,0 +1,2 @@
+rootProject.name='ImageViewer'
+include ':app'
diff --git a/ImageViewer/.project b/ImageViewer/.project
new file mode 100644
index 0000000..1e6f5b0
--- /dev/null
+++ b/ImageViewer/.project
@@ -0,0 +1,17 @@
+
+
+ ImageViewer
+ Project ImageViewer created by Buildship.
+
+
+
+
+ org.eclipse.buildship.core.gradleprojectbuilder
+
+
+
+
+
+ org.eclipse.buildship.core.gradleprojectnature
+
+