Complexity of std::set constructor from sorted elements

Normally, constructing a rb-tree is O(N*log(N)) time.

However, initialization of std::set from sorted elements is linear time.

How does that work? Is there a sorted-check before initialization? Or search from the right-most one?



Read more here: https://stackoverflow.com/questions/66280462/complexity-of-stdset-constructor-from-sorted-elements

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