if (left >= right) {
return;
}
- T** pivot = left + (right - left >> 1);
+ T** pivot = left + ((right - left) >> 1);
+ pivot = SkTQSort_Partition(left, right, pivot);
+ SkTQSort(left, pivot - 1);
+ SkTQSort(pivot + 1, right);
+}
+
+template <typename T>
+static T* SkTQSort_Partition(T* left, T* right, T* pivot) {
+ T pivotValue = *pivot;
+ SkTSwap(*pivot, *right);
+ T* newPivot = left;
+ while (left < right) {
+ if (*left < pivotValue) {
+ SkTSwap(*left, *newPivot);
+ newPivot += 1;
+ }
+ left += 1;
+ }
+ SkTSwap(*newPivot, *right);
+ return newPivot;
+}
+
+template <typename T> void SkTQSort(T* left, T* right) {
+ if (left >= right) {
+ return;
+ }
+ T* pivot = left + ((right - left) >> 1);
pivot = SkTQSort_Partition(left, right, pivot);
SkTQSort(left, pivot - 1);
SkTQSort(pivot + 1, right);
if (left >= right) {
return;
}
- T* pivot = left + (right - left >> 1);
+ T* pivot = left + ((right - left) >> 1);
pivot = SkTQSort_Partition(context, left, right, pivot, lessThan);
SkQSort(context, left, pivot - 1, lessThan);
SkQSort(context, pivot + 1, right, lessThan);
rand_array(rand, array, count);
SkTHeapSort<int>(array, count);
check_sort(reporter, "Heap", array, count);
+
+ rand_array(rand, array, count);
+ SkTQSort<int>(array, array + count - 1);
+ check_sort(reporter, "Quick", array, count);
}
if (false) { // avoid bit rot, suppress warning
compare_int(array, array);