nzxt red and black case

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Own summary Red black tree Delete-1

To pending del node [X] "To judge: [Occasion ①] If [x] is a leaf node? Case 1: node [X] is red. Del that ends.Case 2: node [X] is black. Del after ===>>> double black problem. [Occasion ②] if [x] is non-leaf node?Step 1: Value interchange: {"Subsequent node Y" with its "middle order traversal" for value

The map in C ++ STL is implemented by the red and black trees, and the search efficiency is O (lgN). Why does it obtain the constant-level search efficiency by using a hash like python?

0 reply content: standard provisions in C ++ STL: * Map, ordered * Unordered_map: unordered. This refers to the difference between hashmap and map by means of the hash list. We know that hashmap is of average O (1) and map is of average O (lnN, in practice, is hashmap superior to map? There are several factors to consider: The memory efficiency of hashmap is lower than that of map, which is obvious. The search efficiency of map is very high in practice. For example, how many times does it ta

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