comefrom: <qiyuangong>389_Find_the_Difference_1.java
code: public char findTheDifference(String s, String t) {
          int total = t.charAt(s.length());
          for (int i = 0; i < s.length(); i++)
              total += (t.charAt(i) - s.charAt(i));
          return (char) total;
      }
masked: public char sample_funcname ( String var_1 , String var_2 ) {
    int var_5 = var_2 . charAt ( var_1 . length ( ) ) ;
    for ( int var_7 = 0 ;
    var_7 < var_1 . length ( ) ;
    var_7 ++ ) var_5 += ( var_2 . charAt ( var_7 ) - var_1 . charAt ( var_7 ) ) ;
    return ( char ) var_5 ;
  }
  