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| var swap = require('./swap');
| var isSorted = require('./isSorted');
| exports = function(arr) {
| var cmp =
| arguments.length > 1 && arguments[1] !== undefined
| ? arguments[1]
| : isSorted.defComparator;
| return quickSort(arr, 0, arr.length - 1, cmp);
| };
| function quickSort(arr, left, right, cmp) {
| if (arr.length <= 1) return arr;
| var idx = partition(arr, left, right, cmp);
| if (left < idx - 1) quickSort(arr, left, idx - 1, cmp);
| if (idx < right) quickSort(arr, idx, right, cmp);
| return arr;
| }
| function partition(arr, left, right, cmp) {
| var pivot = arr[floor((right + left) / 2)];
| while (left <= right) {
| while (cmp(arr[left], pivot) < 0) left++;
| while (cmp(arr[right], pivot) > 0) right--;
| if (left <= right) {
| swap(arr, left, right);
| left++;
| right--;
| }
| }
| return left;
| }
| var floor = Math.floor;
|
| module.exports = exports;
|
|
