public class FifteenPuzzle {
//---------------------------------------------------
public static boolean solvable15Puzzle(int[][] b) {
int c[] = new int[15]; int k = 0; int l1 =0; int b1 =0;
for (int i = 0; i < b.length; i++) {
for (int j = 0; j < b[i].length; j++) {
if (b[i][j] != 0) {
c[k] = b[i][j];
k++;
}
}
}
for (int i = 0; i < c.length ; i++) {
for (int j = 0; j < c.length; j++) {
if (i < j) {
if (c[i] > c[j]) l1++;
}
}
}
for (int i = 0; i < b.length; i++) {
for (int j = 0; j < b[i].length; j++) {
if(b[i][j]==0) b1=i+1;
}
}
if ((l1+b1) % 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));
}
}
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SM=0, CM=30, ST=27, KY=684, 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 ;
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 ;
ERR = 60:00 ;
ERR = 60:00 ;
ERR = 60:00 ;
ERR = 60:00 ;
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