Add some Manual UnitTest to ArrayUtil Test

Week9/Assignment9/src/ArrayUtility.java

@@ -14,9 +14,9 @@ public class ArrayUtility {
 		int length = 0; //Initialize length to store the column as we will pass this to the array constructor
 		for(int i = 0;i < d.length;i++)length+=d[i].length; //SUM of X(nY) = length
 		int[] mergedArray = new int[length]; // Create a new array with size equal to length
-		int currentIndex = 0; //Create a new variable to store the 2D Array Index
+		int currentIndex = 0; //Create a new variable to store the 1D Array Index
 		for(int i = 0;i < d.length;i++)for(int j = 0;j <  d[i].length;j++) { //Loop through every Row and In each iteration of row, loop through every column
-			mergedArray[currentIndex] = d[i][j]; //Set the 2D array element CI to 3D's IJ
+			mergedArray[currentIndex] = d[i][j]; //Set the 1D array element CI to 2D's IJ
 			currentIndex++; //Move the cursor to the next element
 		}
 		return mergedArray;

Week9/Assignment9/src/ArrayUtilityTest.java

@@ -1,16 +1,49 @@
 
 public class ArrayUtilityTest {
 	public static void main(String[] args) {
-		testMerge();
-		testSplit();
+		// testMerge();
+		// testSplit();
+		myTestSplit();
+		myTestMerge();
 	}
-	
+
 	public static void myTestSplit() {
+		int[] myArray = { 1, 8, 3, 1, 5, 3, 7, 5, 3 };
 		// add your code and some testcases the test split() similar to testSplit()
+		ArrayUtility.show(ArrayUtility.split(myArray, 1));
+		System.out.println("Expected:\n[1, 8, 3, 1, 5, 3, 7, 5, 3]\n----------");
+		ArrayUtility.show(ArrayUtility.split(myArray, 2));
+		System.out.println("Expected: Array size 9 cannot be splitted into 2 parts\n----------");
+		ArrayUtility.show(ArrayUtility.split(myArray, 3));
+		System.out.println("Expected:\n[1, 1, 7]\n[8, 5, 5]\n[3, 3, 3]\n----------");
+		ArrayUtility.show(ArrayUtility.split(myArray, 4));
+		System.out.println("Expected: Array size 9 cannot be splitted into 4 parts\n----------");
+		ArrayUtility.show(ArrayUtility.split(myArray, 5));
+		System.out.println("Expected: Array size 9 cannot be splitted into 5 parts\n----------");
+		ArrayUtility.show(ArrayUtility.split(myArray, 6));
+		System.out.println("Expected: Array size 9 cannot be splitted into 6 parts\n----------");
+		ArrayUtility.show(ArrayUtility.split(myArray, 7));
+		System.out.println("Expected: Array size 9 cannot be splitted into 7 parts\n----------");
+		ArrayUtility.show(ArrayUtility.split(myArray, 8));
+		System.out.println("Expected: Array size 9 cannot be splitted into 8 parts\n----------");
+		ArrayUtility.show(ArrayUtility.split(myArray, 10));
+		System.out.println("Expected: n cannot be greater than array's size, 9\n----------");
+		ArrayUtility.show(ArrayUtility.split(myArray, 0));
+		System.out.println("Expected: n must be >= 0\n----------");
+		ArrayUtility.show(ArrayUtility.split(myArray, -1));
+		System.out.println("Expected: n must be >= 0\n----------");
+
+
 	}
 
 	public static void myTestMerge() {
 		// add your code and some testcases the test merge() similar to testMerge()
+		int[][] myArray = { { 6, 13, 56 }, { 92, 55 }, { 12, 32, 13, 92 }, { 10 } };
+		ArrayUtility.show(ArrayUtility.merge(myArray));
+		System.out.println("[6, 13, 56, 92, 55, 12, 32, 13, 92, 10]] - Expected");
+		int[][] myArray2 = {{145},{134,423,42},{33,44,13}};
+		ArrayUtility.show(ArrayUtility.merge(myArray2));
+		System.out.println("[145, 134, 423, 42, 33, 44, 13] - Expected");
 	}
 
 	// do no modify this method

Week9/Assignment9/src/CSVUtility.java

@@ -1,3 +1,4 @@
+
 //This Code is written bt Siwat Sirichai
 import java.io.File;
 import java.io.FileNotFoundException;
@@ -16,15 +17,17 @@ public class CSVUtility {
 	 */
 	public static String[] readFile(String filename) throws FileNotFoundException {
 		// ENTER CODE HERE
-		Scanner sc = new Scanner(new File(filename));
-		int length = 0;
-		for (length = 0; sc.hasNext(); length++)
+		Scanner sc = new Scanner(new File(filename)); // Create a Scanner to take in the file at path filename
+		int length = 0; //Create a length variable and initialize it to zero
+		for (length = 0; sc.hasNext(); length++) 
 			sc.nextLine();
+		sc.close(); //Close the Scanner to prevent resource leak
 		String[] filedata = new String[length];
-		sc = new Scanner(new File(filename));
+		sc = new Scanner(new File(filename)); //Reinitialize the closed scanner
 		for (int i = 0; i < length; i++)
 			filedata[i] = sc.nextLine();
-		return filedata;
+		sc.close(); //Close the Scanner to prevent resource leak
+		return filedata; //Return
 	}
 
 	/**