Run results for: Comb Sort vs. Native Sort

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/601.7.7 (KHTML, like Gecko) Version/9.1.2 Safari/601.7.7

Browser: Safari 9

Operating system: Mac OS X 10.11.6

Device Platform: Other

Date tested: 7 years ago

Test name	Executions per second
Native Sort DESC	3.2 Ops/sec
Native Sort ASC	3.4 Ops/sec
Comb Sort DESC	1.4 Ops/sec
Comb Sort ASC	1.5 Ops/sec

Script Preparation code:

var sampleData = [];
for (var i=0; i < 100000; i++){ 
  sampleData.push({value: (Math.floor(Math.random() * 10000))});
}

var selectorFn = function(x) { 
  return x.value;  
}

var combSort = function (source, selectorFn, sortDirection) {
    var result = source.slice();
    var count = result.length;
    var gap = count;
    var swapped = true;

    while (gap > 1 || swapped) {

      if (gap > 1) {
        gap = Math.floor(gap / 1.24733);
      }

      var i = 0;
      swapped = false;

      while ((i + gap) < count) {

        var item1 = result[i];
        var item2 = result[i + gap];

        if (shouldBeSwaped(selectorFn(item1), selectorFn(item2), selectorFn, sortDirection)) {
          result[i] = item2;
          result[i + gap] = item1;
          swapped = true;
        }

        i++;
      }
	}
  
    return result;
}

 var shouldBeSwaped = function(value, valueToCompare, selectorFn, sortDirection) {
 	var less = value > valueToCompare;
	return sortDirection === "asc" ? less : !less;
  }

Tests:

Native Sort DESC
var order = "desc"; sampleData.sort(function(a,b){ var x = selectorFn(a); var y = selectorFn(b); var res = ((x < y) ? -1 : ((x > y) ? 1 : 0)); return order === "desc" ? -1*res : res; })
Native Sort ASC
var order = "desc"; sampleData.sort(function(a,b){ var x = selectorFn(a); var y = selectorFn(b); var res = ((x < y) ? -1 : ((x > y) ? 1 : 0)); return order === "desc" ? -1*res : res; })
Comb Sort DESC
var order = "asc"; combSort(sampleData, selectorFn, order);
Comb Sort ASC
var order = "asc"; combSort(sampleData, selectorFn, order);

Run results for: Comb Sort vs. Native Sort

Native Sort DESC

Native Sort ASC

Comb Sort DESC

Comb Sort ASC