comefrom: <awangdev>Counting Bits_2.java
code: public int[] countBits(int num) {
          if (num < 0) {
              return null;
          }
          int[] dp = new int[num + 1];
          dp[0] = 0;
          for (int i = 1; i <= num; i++) {
              int prevNum = i >> 1;
              dp[i] = dp[prevNum] + (i & 1);
          }
          return dp;
      }
masked: public int [ ] sample_funcname ( int var_0 ) {
    if ( var_0 < 0 ) {
      return null ;
    }
    int [ ] var_4 = new int [ var_0 + 1 ] ;
    var_4 [ 0 ] = 0 ;
    for ( int var_5 = 1 ;
    var_5 <= var_0 ;
    var_5 ++ ) {
      int var_6 = var_5 >> 1 ;
      var_4 [ var_5 ] = var_4 [ var_6 ] + ( var_5 & 1 ) ;
    }
    return var_4 ;
  }
  