src/main/java/com/zipcodewilmington/looplabs/ArrayUtils.java

@@ -0,0 +1,62 @@
+package com.zipcodewilmington.looplabs;
+
+import java.lang.reflect.Array;
+import java.util.Arrays;
+
+public class ArrayUtils<T> {
+
+    private T[] content;
+
+    public ArrayUtils(T[] content) {
+        this.content = content;
+    }
+
+    public T[] removeDuplicates(T[] arr, T value) {
+        int countOfValue = countValues(arr, value);
+        int index = 0;
+        T[] arr2 =  (T[]) Array.newInstance(content.getClass().getComponentType(), arr.length - countOfValue);
+        for (T i: arr
+             ) {
+            if (!i.equals(value)) {
+                arr2[index++] = i;
+            }
+        }
+        return arr2;
+    }
+
+    public int countValues(T[] arr, T value) {
+        int countOfValue = 0;
+
+        for (T t: arr
+        ) {
+            if (t.equals(value)) {
+                countOfValue++;
+            }
+        }
+        return countOfValue;
+    }
+
+    public T[] removeDupes(T[] arr, int maxNumberOfDuplications) {
+        T[] arr2 = Arrays.copyOf(arr, arr.length);
+        for (T i: arr2) {
+            if ((countValues(arr2, i) >= maxNumberOfDuplications)) {
+                arr2 = removeDuplicates(arr2, i);
+            }
+        }
+        return arr2;
+    }
+
+    public T[] removeDupesExactly(T[] arr, int exactNumberOfDuplications) {
+
+        T[] arr2 = Arrays.copyOf(arr, arr.length);
+        for (T i: arr2
+             ) {
+            if ((countValues(arr2, i) == exactNumberOfDuplications)) {
+                arr2 = removeDuplicates(arr2, i);
+            }
+        }
+
+        return arr2;
+    }
+
+}

src/main/java/com/zipcodewilmington/looplabs/IntegerDuplicateDeleter.java

@@ -1,8 +1,26 @@
 package com.zipcodewilmington.looplabs;
 
+import java.util.Arrays;
+
 /**
  * Created by leon on 1/29/18.
  * @ATTENTION_TO_STUDENTS You are forbidden from modifying the signature of this class.
  */
 public final class IntegerDuplicateDeleter extends DuplicateDeleter<Integer> {
+
+    private ArrayUtils<Integer> arrayUtils;
+    public IntegerDuplicateDeleter(Integer[] intArray) {
+        super(intArray);
+         arrayUtils = new ArrayUtils<>(intArray);
+    }
+
+    @Override
+    public Integer[] removeDuplicates(int maxNumberOfDuplications) {
+        return arrayUtils.removeDupes(super.array, maxNumberOfDuplications);
+    }
+
+    @Override
+    public Integer[] removeDuplicatesExactly(int exactNumberOfDuplications) {
+        return arrayUtils.removeDupesExactly(super.array, exactNumberOfDuplications);
+    }
 }

src/main/java/com/zipcodewilmington/looplabs/StringDuplicateDeleter.java

@@ -1,8 +1,25 @@
 package com.zipcodewilmington.looplabs;
 
+import java.util.Arrays;
+
 /**
  * Created by leon on 1/28/18.
  * @ATTENTION_TO_STUDENTS You are forbidden from modifying the signature of this class.
  */
 public final class StringDuplicateDeleter extends DuplicateDeleter<String> {
+    ArrayUtils<String> arrayUtils;
+    public StringDuplicateDeleter(String[] intArray) {
+        super(intArray);
+        arrayUtils = new ArrayUtils<>(intArray);
+    }
+
+    @Override
+    public String[] removeDuplicates(int maxNumberOfDuplications) {
+        return arrayUtils.removeDupes(super.array, maxNumberOfDuplications);
+    }
+
+    @Override
+    public String[] removeDuplicatesExactly(int exactNumberOfDuplications) {
+        return arrayUtils.removeDupesExactly(super.array, exactNumberOfDuplications);
+    }
 }