Radix Sort (v2)

Revision 2 of this benchmark created on

Setup

function generate(num) {
      var result = [];
      for (var idx = 0; idx < num; ++idx) {
        result.push(~~(Math.random() * 100));
      }
      return result;
    }
    
    function radix_sort(arr, idx_begin, idx_end, bit) {
      if (!Array.isArray(arr)) return;
      idx_begin = (typeof idx_begin === 'undefined') ? 0 : idx_begin;
      idx_end = (typeof idx_end === 'undefined') ? arr.length : idx_end;
      bit = (typeof bit === 'undefined') ? 31 : bit;
      if (idx_begin >= (idx_end - 1) || bit < 0) {
        return;
      }
      var idx = idx_begin;
      var idx_ones = idx_end;
      mask = 0x1 << bit;
      while (idx < idx_ones) {
        if (arr[idx] & mask) {
          --idx_ones;
          var tmp = arr[idx];
          arr[idx] = arr[idx_ones];
          arr[idx_ones] = tmp;
        } else {
          ++idx;
        }
      }
      radix_sort(arr, idx_begin, idx_ones, bit - 1);
      radix_sort(arr, idx_ones, idx_end, bit - 1);
    }

Test runner

Ready to run.

Testing in
TestOps/sec
MSB Radix Sort
var arr = generate(100000);
radix_sort(arr);
ready
Normal Sort
var arr = generate(100000);
arr.sort();
ready

Revisions

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