Note: 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 t
You are given an array of people, people, which are the attributes of some people in a queue (not necessarily in order). Each people[i] = [hi, ki] represents the ith person of height hi with exactly ki other people in front who have a height greater than or equal to hi. Reconstruc...
(2) The height of a rooted tree is the number of edges on the longest downward path between the root and a leaf. View Code
LeetCode 987. Vertical Order Traversal of a Binary Tree 2019-12-10 07:55 −原题链接在这里:https://leetcode.com/problems/vertical-order-traversal-of-a-binary-tree/ 题目: Given a binary tree, return the vertical order traversa...
LeetCode 987. Vertical Order Traversal of a Binary Tree 2019-12-10 07:55 −原题链接在这里:https://leetcode.com/problems/vertical-order-traversal-of-a-binary-tree/ 题目: Given a binary tree, return the vertical order traversa...
2. Create a BIT that supports on range sum query for the number of filled positions in given range [0, r]. 3. For each new person, binary search on BIT using the following decision tree. Denote people[i][1] + 1 as K. It is the correct empty slot for this person, need to + ...