Map<Integer, List<Integer>> map = new HashMap(); public List<List<Integer>> verticalTraversal(TreeNode root) { List<List<Integer>> res = new ArrayList(); if(root==null) return res; // 借助了队列qt和qi,代替了递归//树的所有
代码参考: 1/**2* Definition for a binary tree node.3* struct TreeNode {4* int val;5* TreeNode *left;6* TreeNode *right;7* TreeNode() : val(0), left(nullptr), right(nullptr) {}8* TreeNode(int x) : val(x), left(nullptr), right(nullptr) {}9* TreeNode(int x, TreeNode ...
Running a vertical line fromX = -infinitytoX = +infinity, whenever the vertical line touches some nodes, we report the values of the nodes in order from top to bottom (decreasingYcoordinates). If two nodes have the same position, then the value of the node that is reported first is the...
Given a binary tree, return the vertical order traversal of its nodes values. For each node at position (X, Y), its left and right children respectively will be at positions (X-1, Y-1) and (X+1, Y-1). Running a vertical line from X = -infinity to X = +infinity, whenever the...
If we are given a binary tree and we need to perform a vertical order traversal, that means we will be processing the nodes of the binary tree from left to right. Suppose we have a tree such as the one given below. If we traverse the tree in vertical order and print the nodes then...
Binary Tree Vertical Order Traversal https://leetcode.com/problems/binary-tree-vertical-order-traversal/ 这道题让我们竖直的遍历树,和按层遍历非常相似。我第一次做的时候,使用的是递归的形式,发现顺序会出错。 因此还是要借助按层遍历的思路,将树逐层的加入一个队列,然后再取出来进行处理。 遍历的时候,...
Check out this problem -Diameter Of Binary Tree Frequently Asked Questions What is the vertical order traversal? Vertical order traversal means that we find the different vertical lines in the binary tree, then print the nodes on these from left to right, the nodes on a vertical line are prin...
int currLevel1; // Indicates variable to store current node // while traversing tree vertically. Node1* currNode1; // Used to declare queue to do vertical order // traversal. A pair is used as element // of queue. The first element in pair // represents the node and the second //...
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... Dylan_Java_NYC 0 931 【Flutter】布局类组件之对齐和相对定位 2019...
The number of nodes in the tree is in the range[1, 1000]. 0 <= Node.val <= 1000 这道题是让给二叉树进行竖直遍历,怎么隐约感觉以前做过这道题,结果去查了一下,果然有Binary Tree Vertical Order Traversal。怎么把标题顺序调换一下就是一道新题,Excuse me???结果仔细研究一下,两道题还真有些不...