Justin Wang Internship Challenge

Challenge_1.java

@@ -0,0 +1,33 @@
+import java.util.ArrayList;
+
+class Main {
+  public static void main(String[] args) {
+    findPairs(new int[]{2, 4, 5, 1, 3, 5, 4}, 6);
+    System.out.println(isPalindrome("moddom"));
+  }
+
+  static void findPairs(int[] testArray, int targetSum) {
+    ArrayList<String> dups = new ArrayList<>();
+    for(int i = 0;i<testArray.length;i++){
+      for(int j = i+1;j<testArray.length;j++){
+        int max = Math.max(testArray[i],testArray[j]);
+        int min = Math.min(testArray[i],testArray[j]);
+        if(min+max == targetSum && !dups.contains(min+" "+max)){
+          dups.add(min+" "+max);
+          System.out.println("("+min+", "+max+")");
+        }
+      }
+    }
+  }
+
+  static boolean isPalindrome(String testString) {
+    String[] string = testString.split("");
+    for(int i = 0;i<Math.floor(string.length/2.0);i++){
+      System.out.println(string[i]+" "+string[string.length-i-1]);
+      if(!string[i].equals(string[string.length-i-1])){
+        return false;
+      }
+    }
+    return true;
+  }
+}

Challenge_2/.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