completed lab

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

@@ -1,7 +1,89 @@
 package com.zipcodewilmington.arrayutility;
 
+import java.util.*;
+
 /**
  * Created by leon on 3/6/18.
  */
-public class ArrayUtility {
+public class ArrayUtility<T> {
+
+
+    private T[] inputArray;
+
+    public ArrayUtility(T[] inputArray) {
+        this.inputArray = inputArray;
+    }
+
+    public T[] mergeArray(T[] arrayToMerge, T[] inputArray) {
+        T[] result = Arrays.copyOf(arrayToMerge, arrayToMerge.length + inputArray.length);
+        System.arraycopy(inputArray, 0, result, arrayToMerge.length, inputArray.length);
+        return result;
+    }
+
+    public T getMostCommonFromMerge(T[] arrayToMerge) {
+        T[] thisArray = mergeArray(arrayToMerge, inputArray);
+        Map<T, Integer> map = new TreeMap<>();
+
+        for (T mostCommon : thisArray) {
+            //iterate through array to see if how many times entered.
+            if (map.containsKey(mostCommon)) {
+                map.put(mostCommon, map.get(mostCommon) + 1);
+                //keep adding to value if you keep seeing it
+            } else {
+                map.put(mostCommon, 1);
+
+            }
+
+        }
+        return (Collections.max(map.entrySet(), Map.Entry.comparingByValue())
+                .getKey());
+    }
+
+    public int countDuplicatesInMerge(T[] arrayToMerge, T valueToEvaluate) {
+        int counter = 0;
+        T[] thisArray = mergeArray(arrayToMerge, inputArray);
+        for (int i = 0; i < thisArray.length; i++) {
+            if (thisArray[i].equals(valueToEvaluate)) {
+                counter++;
+            }
+        }
+        return counter;
+    }
+
+    public Integer getNumberOfOccurrences(T valueToEvaluate) {
+        int count = 0;
+        for (int i = 0; i < inputArray.length; i++) {
+            if (inputArray[i].equals(valueToEvaluate))
+                count++;
+        }
+
+        return count;
+    }
+
+    public T[] removeValue(T valueToRemove) {
+        //create a copy of the array making its new length # of occurances -valueToremove
+        T[] copyArray = Arrays.copyOf(inputArray, inputArray.length-(getNumberOfOccurrences(valueToRemove)));
+        //have to declare the length of the new array...so keep count
+        int lengthOfNewArray = 0;
+        for(int i = 0; i < inputArray.length; i++){
+            //put the values that arent the one to remove in new array
+            if (!inputArray[i].equals(valueToRemove)){
+                copyArray[lengthOfNewArray] = inputArray[i];
+                lengthOfNewArray++;
+            }
+        }
+          return copyArray;
+
+
+        //CANT INSTANTIATE A GENERIC ARRAY!
+//        ArrayList<T> list = new ArrayList<>(Arrays.asList(inputArray));
+//        for (int i = 0; i < list.size(); i++) {
+//            if (list.get(i).equals(valueToRemove)) {
+//                list.remove(i);
+//                return list.toArray(new <T> T[0]);
+//            }
+//        }
+//        return list.toArray(new <T> T[0]);
+    }
 }
+

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

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