Sorting algorithms
Definition
Stable sort: two elements with equal keys are in the same order after sorting. For instance, insertion sort, merge sort, bubble sort are stable. Quicksort, heapsort are unstable.
Complexity
| Sorting algoritm | Worst-case performance | Best-case performance | Average performance | Worst-case space complexity |
|---|---|---|---|---|
| Bubblesort | O(n2) | O(n) | O(n2) | O(1) |
| Mergesort | O(n log n) | O(n log n) | O(n log n) | O(n) / O(1) with linked list |
| Quicksort | O(n2) | O(n log n) | O(n log n) | O(n) / O(1) with linked list |