Is Map Sorted by Default?

By default, a Map in C++ is sorted in increasing order based on its key.

Are maps automatically sorted?

No. It will iterate based on the sorted order, not the order that you inserted elements. In the case of std::string , it sorts in lexicographic order (alphabetic order). If you want to iterate based on the insertion order, you're better off using a sequence container, such as a std::vector or a std::list .

Are maps sorted?

std::map. std::map is a sorted associative container that contains key-value pairs with unique keys. Keys are sorted by using the comparison function Compare . Search, removal, and insertion operations have logarithmic complexity.