import java.util.*;

public class TilePuzzle {

	private boolean bGameOver = false;
	private final int size = 4;
	// define instance variables here

	
	
	// implement this method to initialize a random puzzle
	public void buildBoard()
	{
		
	}
	
	// implement this method to move the tile according to the command
	public void move(char command)
	{
		
	}
	
	// implement this method to display the board
	public void displayBoard()
	{
		
	}
	
	// check whether the game is over
	public boolean isGameOver()
	{
		return bGameOver;
	}
	
	// you can use this method to swap two elements if needed
	// swap the element at (i, j) with the one at (p, q) in the 2D array, arr
	private static void swap(int[][] arr, int i, int j, int p, int q)
	{
		int temp = arr[i][j];
		arr[i][j] = arr[p][q];
		arr[p][q] = temp;
	}
}