comefrom: <qiyuangong>832_Flipping_an_Image_1.java
code: public int[][] flipAndInvertImage(int[][] A) {
          int C = A[0].length;
          for (int[] row: A)
              for (int i = 0; i < (C + 1) / 2; ++i) {
                  int tmp = row[i] ^ 1;
                  row[i] = row[C - 1 - i] ^ 1;
                  row[C - 1 - i] = tmp;
              }
  
          return A;
      }
masked: public int [ ] [ ] sample_funcname ( int [ ] [ ] var_0 ) {
    int var_3 = var_0 [ 0 ] . length ;
    for ( int [ ] var_4 : var_0 ) for ( int var_5 = 0 ;
    var_5 < ( var_3 + 1 ) / 2 ;
    ++ var_5 ) {
      int var_8 = var_4 [ var_5 ] ^ 1 ;
      var_4 [ var_5 ] = var_4 [ var_3 - 1 - var_5 ] ^ 1 ;
      var_4 [ var_3 - 1 - var_5 ] = var_8 ;
    }
    return var_0 ;
  }
  