comefrom: <awangdev>Sliding Puzzle_1.java
code: private void swap(int[] nums, int x, int y, int mX, int mY) {
  
          int oldIndex = x * 3 + y;
          int newIndex = mX * 3 + mY;
          int temp = nums[oldIndex];
          nums[oldIndex] = nums[newIndex];
          nums[newIndex] = temp;
      }
masked: private void var_0 ( int [ ] var_1 , int var_2 , int var_3 , int var_4 , int var_5 ) {
    int var_6 = var_2 * 3 + var_3 ;
    int var_7 = var_4 * 3 + var_5 ;
    int var_8 = var_1 [ var_6 ] ;
    var_1 [ var_6 ] = var_1 [ var_7 ] ;
    var_1 [ var_7 ] = var_8 ;
  }
  