Algorithm-Hash

1. https://blog.csdn.net/ns_code/article/details/20763801
2. https://segmentfault.com/a/1190000010622249#articleHeader7
3. https://blog.csdn.net/zxt0601/article/details/77413921
4. https://www.cnblogs.com/gaochundong/p/hashtable_and_perfect_hashing.html
5.