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tests passed - had to comment out UnitTestingUtils in removevaluetest

Jennifer Chao 6 years ago
parent
commit
732a8068d9

+ 73
- 1
src/main/java/com/zipcodewilmington/arrayutility/ArrayUtility.java View File

@@ -1,7 +1,79 @@
1 1
 package com.zipcodewilmington.arrayutility;
2 2
 
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+import java.lang.reflect.Array;
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+
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 /**
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  * Created by leon on 3/6/18.
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  */
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-public class ArrayUtility {
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+public class ArrayUtility<T> {
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+
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+    private T[] array;
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+
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+    public ArrayUtility(T[] inputArray) {
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+        this.array = inputArray;
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+    }
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+
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+    public T[] mergeArrays(T[] inputArray, T[] arrayToMerge) {
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+        T[] mergedArray = (T[]) Array.newInstance(this.array.getClass().getComponentType(), this.array.length + arrayToMerge.length);
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+
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+        for (int i = 0; i < mergedArray.length; i++) {
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+            if (i < inputArray.length) {
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+                mergedArray[i] = inputArray[i];
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+            } else {
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+                mergedArray[i] = arrayToMerge[i - inputArray.length];
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+            }
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+        }
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+        return mergedArray;
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+    }
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+
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+    public Integer countDuplicatesInMerge(T[] arrayToMerge, T valueToEvaluate) {
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+        T[] mergedArray = mergeArrays(this.array, arrayToMerge);
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+        int count = 0;
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+
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+        for (T element : mergedArray) {
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+            if (element == valueToEvaluate) {
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+                count++;
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+            }
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+        }
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+        return count;
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+    }
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+
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+    public T getMostCommonFromMerge(T[] arrayToMerge) {
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+        T[] mergedArray = mergeArrays(this.array, arrayToMerge);
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+        int mostCommonCount = 0;
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+        T mostCommon = mergedArray[0];
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+
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+        for (int i = 0; i < mergedArray.length; i++) {
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+            if (getNumberOfOccurrences(mergedArray[i]) > mostCommonCount) {
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+                mostCommonCount = getNumberOfOccurrences(mergedArray[i]);
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+                mostCommon = mergedArray[i];
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+            }
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+        }
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+        return mostCommon;
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+    }
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+
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+    public Integer getNumberOfOccurrences(T valueToEvaluate) {
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+        int count = 0;
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+
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+        for (T element : this.array) {
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+            if (element == valueToEvaluate) {
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+                count++;
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+            }
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+        }
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+        return count;
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+    }
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+
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+    public T[] removeValue(T valueToRemove) {
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+        T[] newArrayWithout = (T[]) Array.newInstance(this.array.getClass().getComponentType(), this.array.length - getNumberOfOccurrences(valueToRemove));
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+        int j = 0;
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+
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+        for (int i = 0; i < this.array.length; i++) {
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+            if (this.array[i] != valueToRemove) {
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+                newArrayWithout[j] = this.array[i];
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+                j++;
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+            }
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+        }
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+        return newArrayWithout;
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+    }
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+
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 }

+ 1
- 1
src/test/java/com/zipcodewilmington/arrayutility/RemoveValueTest.java View File

@@ -1,6 +1,6 @@
1 1
 package com.zipcodewilmington.arrayutility;
2 2
 
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-import com.zipcodewilmington.UnitTestingUtils;
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+// import com.zipcodewilmington.UnitTestingUtils;
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 import org.junit.Test;
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 /**