comefrom: <awangdev>51. N-Queens_3.java
code: private boolean validate(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(rowNum - newRowNum) == Math.abs(colNum - newColNum)) {
                  return false;
              }
          }
          return true;
      }
masked: private boolean var_0 ( List < Integer > var_1 , int var_2 ) {
    int var_3 = var_1 . size ( ) ;
    for ( int var_4 = 0 ;
    var_4 < var_1 . size ( ) ;
    var_4 ++ ) {
      int var_5 = var_1 . get ( var_4 ) ;
      if ( var_5 == var_2 || Math . abs ( var_4 - var_3 ) == Math . abs ( var_5 - var_2 ) ) {
        return false ;
      }
    }
    return true ;
  }
  