public static String Enter(String s1, String s2, String s3, String s4)
{
    for (int q = 0; q < 4; q++) {
            if (q == 0) {
                colors[0][q] = s1;
            }
            if (q == 1) {
                colors[0][q] = s2;
            }
            if (q == 2) {
                colors[0][q] = s3;
            }
            if (q == 3) {
                colors[0][q] = s4;
            }
        }
        for (int i = 0; i < 4; i++) {

            if (solution[i].equals(colors[0][i])) {
                s = "1" + s;
            }
            else
            {

                for (int j = 0; j < 4; j++)
                {
                    if(colors[0][i].equals(solution[j]))
                    {
                        inSolution = true;
                    }
                }

                if(inSolution == true)
                {
                s = s + "0";
                }
                else
                {
                s = s + "2";
                }

            }
            if(colors[0][i].equals("1111"))
            {
                //something

            }



        }

                    return s;

}

   public static String colors[][] = new String[10][4];
   public static String solution[] = new String[4];
   public static boolean inSolution = false;
   public static String s = "";