completed lab

src/main/java/com/zipcodewilmington/arrayutility/ArrayUtility.java

@@ -1,7 +1,92 @@
 package com.zipcodewilmington.arrayutility;
 
+
+import java.lang.reflect.Array;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Set;
+
 /**
  * Created by leon on 3/6/18.
  */
-public class ArrayUtility {
+public class ArrayUtility <T> {
+
+    private T[] array;
+
+    public ArrayUtility(T[] array){
+        this.array = array;
+    }
+
+
+ public Integer countDuplicatesInMerge(T[] array, T value){
+        int count = getNumberOfOccurrences(value);
+        ArrayUtility<Object> arrayUtility = new ArrayUtility<Object>(array);
+        count += arrayUtility.getNumberOfOccurrences(value);
+     return count;
+ }
+
+
+
+
+    public  T[] removeValue(T value){
+        T[] array = Arrays.copyOf(this.array, this.array.length - getNumberOfOccurrences(value));
+        int x = 0;
+        for(T t : this.array)
+            if (!t.equals(value)) {
+                array[x] = t;
+                x++;
+            }
+        return array;
+    }
+
+
+    public T getMostCommonFromMerge(T[] arrayToMerge) {
+        int count;
+        HashMap<T, Integer> testMap = new HashMap<>();
+        for(T t: this.array) {
+            count = testMap.getOrDefault(t, 0);
+            testMap.put(t, ++count);
+        }
+        for(T t: arrayToMerge) {
+            count = testMap.getOrDefault(t, 0);
+            testMap.put(t, ++count);
+        }
+
+        count = 0;
+        T answer = null;
+        for(T t: testMap.keySet())
+            if(testMap.get(t) > count){
+            count = testMap.get(t);
+            answer =t;
+            }
+
+
+//        T [] mergedArray = mergeArrays(arrayToMerge);
+//        int count = 0;
+//        T answer = null;
+//        for(T t : mergedArray)
+//            if(getNumberOfOccurrences(t) > count) {
+//                count = getNumberOfOccurrences(t);
+//                answer = t;
+//            }
+        return answer;
+    }
+
+    public T [] mergeArrays(T[] arrayToMerge){
+        int thisALen = this.array.length;
+        int AToMergeLen = arrayToMerge.length;
+        T[] mergedArray = (T[]) Array.newInstance(arrayToMerge.getClass().getComponentType(), thisALen+ AToMergeLen);
+        System.arraycopy(this.array, 0, mergedArray, 0, thisALen);
+        System.arraycopy(arrayToMerge, 0, mergedArray, AToMergeLen, AToMergeLen);
+        return mergedArray;
+    }
+
+    public Integer getNumberOfOccurrences(T valueToEvaluate) {
+        int count = 0;
+        for(T t : this.array)
+            if (t.equals(valueToEvaluate))
+                count++;
+        return count;
+    }
 }

src/test/java/com/zipcodewilmington/arrayutility/RemoveValueTest.java

@@ -1,6 +1,5 @@
 package com.zipcodewilmington.arrayutility;
 
-import com.zipcodewilmington.UnitTestingUtils;
 import org.junit.Test;
 
 /**