comefrom: <awangdev>52. N-Queens II_2.java
code: private boolean validateBoard(List<Integer> list, int newColNum) {
  
          int newRowNum = list.size();
          for (int rowNum = 0; rowNum < list.size(); rowNum++) {
              int colNum = list.get(rowNum);
              if (colNum == newColNum || Math.abs(newColNum - colNum) == Math.abs(newRowNum - rowNum)) {
                  return false;
              }
          }
  
          return true;
      }
masked: private boolean var_0 ( List < Integer > var_3 , int var_4 ) {
    int var_6 = var_3 . size ( ) ;
    for ( int var_8 = 0 ;
    var_8 < var_3 . size ( ) ;
    var_8 ++ ) {
      int var_10 = var_3 . get ( var_8 ) ;
      if ( var_10 == var_4 || Math . abs ( var_4 - var_10 ) == Math . abs ( var_6 - var_8 ) ) {
        return false ;
      }
    }
    return true ;
  }
  