comefrom: <awangdev>766. Toeplitz Matrix_2.java
code: public boolean isToeplitzMatrix(int[][] matrix) {
          for (int i = 0; i < matrix.length - 1; i++) {
              for (int j = 0; j < matrix[i].length - 1; j++) {
                  if (matrix[i][j] != matrix[i + 1][j + 1]) return false;
              }
          }
          return true;
      }
masked: public boolean var_0 ( int [ ] [ ] var_1 ) {
    for ( int var_3 = 0 ;
    var_3 < var_1 . length - 1 ;
    var_3 ++ ) {
      for ( int var_6 = 0 ;
      var_6 < var_1 [ var_3 ] . length - 1 ;
      var_6 ++ ) {
        if ( var_1 [ var_3 ] [ var_6 ] != var_1 [ var_3 + 1 ] [ var_6 + 1 ] ) return false ;
      }
    }
    return true ;
  }
  