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[] a = new int[15];
    int k = 0;
    int t = 0;
    for (int i = 0; i < b.length; i++) {
      for (int j = 0; j < b[i].length; j++) {
        if (b[i][j] != 0) {
        a[k] = b[i][j];
        k++;
        } else {
          t = i + 1;
        }  
      }
    }
    
    int count = 0;
    for (int i = 0; i < a.length; i++) {
      for (int j = 0; j < a.length; j++) {
        if (i < j) {
          if (a[i] > a[j]) {
          count++;
      }
      }
    }
    }
    
    if ((count + t) % 2 == 0) {
      return true;
    } else {
      return false;
    }  
        
  }
  //---------------------------------------------------
  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=0, CM=5, ST=4, KY=589, TR=60:00
ERR = 60:00 ;
ERR = 60:00 ;
ERR = 60:00 ;
ERR = 60:00 ;
ERR = 60:00 ;