comefrom: <awangdev>Add Digits_1.java
code: public int addDigits(int num) {
          if (num < 10) {
              return num;
          }
          while (num > 9) {
              int temp = 0;
              while (num != 0) {
                  temp += num % 10;
                  num = num / 10;
              }
              num = temp;
          }
          return num;
      }
masked: public int sample_funcname ( int var_0 ) {
    if ( var_0 < 10 ) {
      return var_0 ;
    }
    while ( var_0 > 9 ) {
      int var_4 = 0 ;
      while ( var_0 != 0 ) {
        var_4 += var_0 % 10 ;
        var_0 = var_0 / 10 ;
      }
      var_0 = var_4 ;
    }
    return var_0 ;
  }
  