void Puzzle15::creatRandom15Puzzle(){
    int possibleNumbers[4][4] = {
            {0, 1, 2, 3},
            {4, 5, 6, 7},
            {8, 9, 10, 11},
            {12, 13, 14, 15}
        };
    int puzzleGenerated[4][4] = {};
    int randomNum;
    bool validNum;
    bool validPuzzle = false;
    int x = 0;
    int y = 0;

    while(y < 4){
        if(y >=4 ){
            break;
        }
        x = 0;

        while(x < 4){
            if(y > 3) {
                break;
            }
            randomNum = rand() % 16 + 0;
            validNum = true;

            for(int i=0; i < 4; i++){
                for(int j=0; j < 4; j++){
                    if(puzzleGenerated[i][j] == randomNum){
                        validNum = false;
                       // cout << "RandomNum: " << randomNum << " puzzleGenerated: " << puzzleGenerated[i][j] << "\n";
                    }
                }
            }
            if(validNum == true){
                puzzleGenerated[y][x] = randomNum;
                x++;
                cout << "X: " << x << "\n";
            }
        }

        y++;
        cout << "Y: " << y << "\n";

        if(y == 4){
            // validPuzzle = isPuzzleSolvable(puzzleGenerated);
            copyPuzzle(puzzleGenerated);
            displayPuzzle();
            break;
            // if(!validPuzzle){
            //     copyPuzzle(puzzleGenerated);
            //     displayPuzzle();
            //     loop = false;
            // }
        }
    }
}