comefrom: <awangdev>Number of Digit One_1.java
code: public int countDigitOne(int n) {
          int count = 0;
          for (long i = 1; i <= n; i *= 10) {
              count += (n / i + 8) / 10 * i;
              if (n / i % 10 == 1) {
                  count += n % i + 1;
              }
          }
          return count;
      }
masked: public int sample_funcname ( int var_0 ) {
    int var_2 = 0 ;
    for ( long var_4 = 1 ;
    var_4 <= var_0 ;
    var_4 *= 10 ) {
      var_2 += ( var_0 / var_4 + 8 ) / 10 * var_4 ;
      if ( var_0 / var_4 % 10 == 1 ) {
        var_2 += var_0 % var_4 + 1 ;
      }
    }
    return var_2 ;
  }
  