28 function swap(ary, x, y) {  argument
29   var temp = ary[x];
30   ary[x] = ary[y];
31   ary[y] = temp;
58 function doQuickSort(ary, comparator, p, r) {  argument
78     swap(ary, pivotIndex, r);
79     var pivot = ary[r];
88       if (comparator(ary[j], pivot) <= 0) {
90         swap(ary, i, j);
94     swap(ary, i + 1, j);
99     doQuickSort(ary, comparator, p, q - 1);
100     doQuickSort(ary, comparator, q + 1, r);
112 exports.quickSort = function (ary, comparator) {  argument
113   doQuickSort(ary, comparator, 0, ary.length - 1);