comefrom: <awangdev>788. Rotated Digits_1.java
code: private int[] freq(int num) {
  
          int[] count = new int[10];
          while (num != 0) {
              count[num%10]++;
              num /= 10;
          }
          return count;
      }
masked: private int [ ] sample_funcname ( int var_0 ) {
    int [ ] var_2 = new int [ 10 ] ;
    while ( var_0 != 0 ) {
      var_2 [ var_0 % 10 ] ++ ;
      var_0 /= 10 ;
    }
    return var_2 ;
  }
  