Lab8-Puzzle15

JLab>javac FifteenPuzzle.java
JLab>
JLab>java Selftest 

JLab> testPuzzle15 : ok ok ok ok ok ok ok ok ok ok  (10.0/10.0)
JLab> : -----------------------------
JLab> : ?????? 10.0 ????? (???? 10.0)
JLab> : -----------------------------
JLab> :<POINT>10.0</POINT> (<TOTAL>10.0</TOTAL> )
JLab>

public class FifteenPuzzle {
  //---------------------------------------------------
  public static boolean solvable15Puzzle(int[][] b) {
    int c = 0, a = 0;
    int[] x = new int[16];
    for (int i = 0; i < 4; i++)
      for (int j = 0; j < 4; j++) {
        x[a] = b[i][j];
        a++;
        if (c == 0 && b[i][j] == 0)
          c += i;
      }
    for (int i = 0; i < 15; i++)
      for (int j = i + 1; j < 16; j++)
        if (x[j] != 0 && x[i] != 0 && x[i] > x[j])
          c++;
    if (c % 2 == 0)
      return false;
    else
      return true;
  }
  //---------------------------------------------------
  public static void main(String[] a) {
    int[][] ok = { { 1, 2, 3, 4 },
                    { 5, 6, 7, 8 },
                    { 9, 10, 12, 15 },
                    { 13, 14, 11, 0 } };
    int[][] nok = { { 1, 2, 3, 4 },
                    { 5, 6, 7, 8 },
                    { 9, 10, 11, 12 },
                    { 13, 15, 14, 0 } };
    System.out.println(solvable15Puzzle(ok));
    System.out.println(solvable15Puzzle(nok));

  }
}

SM=1, CM=24, ST=42, KY=843, TR=60:00
ERR = 60:00 ;
ERR = 60:00 ;
ERR = 60:00 ;
ERR = 60:00 ;
ERR = 60:00 ;
ERR = 60:00 ;
ERR = 60:00 ;
ERR = 60:00 ;
ERR = 60:00 ;
ERR = 60:00 ;
ERR = 60:00 ;
ERR = 60:00 ;
ERR = 60:00 ;