//快速排序法 void QuickSort(int *a, int left, int right) { int i = left; int j = right; int k = a[left]; if (i >= j) { return; } while (i < j) { while ((i < j) && (k <= a[j])) { j--; } a[i] = a[j]; while ((i < j) && (k >= a[i]…
destroy_all and delete_all Destroy the records by instantiating each record and calling its #destroy method.在删除前实例化每条记录,并回调callback execution. ⚠️ :如果想要快速删除,如果这个动作不涉及associations or callbacks, use delete_all instead. 因为delete_all直接使用SQL DELETE . 豆知识:…