2D Puzzle Game in Java full source code

Template for puzzle Game:
public class Puzzle {
public static final int N = 4;
public static final int NUMBER_OF_ROTATIONS = 5;
public static void main(String[] args) {
int[][] puzzle = new int[N][N];
reset(puzzle);
test(puzzle);
reset(puzzle);
scramble(puzzle);
System.out.println("### Testing puzzle game play\n");
play(puzzle);
}
public static void print(int[][] puzzle) {
for (int[] row: puzzle) {
for (int elem: row) {
System.out.printf("%4d", elem);
}
System.out.println();
}
System.out.println();
}
public static void test(int[][] puzzle) {
System.out.println("### Testing reset method\n");
print(puzzle);
System.out.println("### Testing rotate methods\n");
print(puzzle);
for (int i = 0; i < N; i++) {
System.out.println("### rotateColumn(" + i + ")\n");
rotateColumn(puzzle, i);
print(puzzle);
System.out.println("### rotateRow(" + i + ")\n");
rotateRow(puzzle, i);
print(puzzle);
}
reset(puzzle);
System.out.println("### Testing random rotations\n");
print(puzzle);
for (int i = 0; i < 5; i++) {
randomRotation(puzzle);
print(puzzle);
}
}
public static void reset(int[][] puzzle) {
for (int i = 0; i < N; i++) {
for (int j = 0; j < N; j++) puzzle[i][j] = i * N + j;
}
}
public static void scramble(int[][] puzzle) {
for (int i = 0; i < NUMBER_OF_ROTATIONS; i++) {
randomRotation(puzzle);
}
}
public static void rotateRow(int[][] arr, int row) {
for (int i = arr.length - 1; i0; i--) {
int r = (int)(Math.random() * (i + 1));
int[] c = arr[i];
arr[i] = arr[r];
arr[r] = c;
}
} // TODO: Implement method as specified in assignment brief public static void rotateColumn(int[][] arr, int column) { } // TODO: Implement method as specified in assignment brief public static void randomRotation(int[][] puzzle) { } // TODO: Implement method as specified in assignment brief static void play(int[][] puzzle) { } }
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