Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!

std::sort std::stable_sort std::partial_sort

Notice that only std::stable_sort is stable sort (at the cost of additional time/space complexity). It is easy to achive stable sort using std::sort or std::qsort by add extra criterias for sorting. For example, if you have to sort some nodes by size and want to have stable results, you want use the index/name of the nodes as a secondary sorting criteria. You can do this by comparing std::pair of node size and node index/name.