2021年11月21日
并查集(UnionFind) 系列 547,lintcode434,128,684,399,721,827,1631,1202
摘要： 547. Number of Provinces Medium There are n cities. Some of them are connected, while some are not. If city a is connected directly with city b, and c 阅读全文
posted @ 2021-11-21 03:11 xiaoyongyong 阅读(59) 评论(0) 推荐(0)
Trie 系列 208, 211, 212, 421, 386, 1233, 588, 745
摘要： 208. Implement Trie (Prefix Tree) Medium A trie (pronounced as "try") or prefix tree is a tree data structure used to efficiently store and retrieve k 阅读全文
posted @ 2021-11-21 00:35 xiaoyongyong 阅读(126) 评论(0) 推荐(0)