LeetCode319 Minimum height trees we have an undirected graph, we can choose any node as root. now, we wantt to choose the node as root which makes the tree with minimun height. and the tree desn;t have to be binary as long as it is a tree. if we have multiple root all minimum ...
BinaryIndexedTree bit=newBinaryIndexedTree(n + 1);int[][] ans =newint[n][];for(inti = 0; i < n; i++) {intl = 1, r =n;while(l <r) {intmid = l + (r - l) / 2;intfilled =bit.rangeSum(mid);if(mid - filled == people[i][1] + 1 && ans[mid - 1] ==null) {...
(1) According to thedefinition of tree on Wikipedia: “a tree is an undirected graph in which any two vertices are connected byexactlyone path. In other words, any connected graph without simple cycles is a tree.” (2) The height of a rooted tree is the number of edges on the longest...
PAT_A1014 Waiting in Line 2019-11-23 17:48 −1014 Waiting in Line (30 分) 作者: CHEN, Yue 单位: 浙江大学 时间限制: 400 ms 内存限制: 64 MB 代码长度限制: 16 KB Suppose a bank has N windows... funforever 0 288 LeetCode 987. Vertical Order Traversal of a Binary Tree ...
LeetCode319 Minimum height trees we have an undirected graph, we can choose any node as root. now, we wantt to choose the node as root which makes the tree with minimun height. and the tree desn;t have to be binary as long as it is a tree. if we have multiple root all minimum ...