Red-Black Tree

tags: C/C++ source: GeeksforGeeks. “Set vs Unordered_set in C++ STL,” May 28, 2018. https://www.geeksforgeeks.org/set-vs-unordered_set-c-stl/. set Ordered set that implemented by a “Self balancing BST” like Red-Black Tree. Extra find operations equal_range returns range of elements matching a specific key lower_bound returns an iterator to the first element not less than the given key upper_bound returns an iterator to the first element greater than the given key #include <iostream> #include <set> #include <assert.h> using namespace std; int main(void) { set<int> hset; hset.insert(5); hset.insert(8); hset.insert(13); { // Lower bound equal or greater than auto iter = hset.lower_bound(5); assert(*iter == 5); // 5's lower bound is 5 itself in the set } { // Upper bound greater than 5 auto iter = hset.upper_bound(5); assert(*iter == 8); // 5's upper bound is the first value greater than itself } } unordered_set Set that implemented by Hash Table. ...