Java publicintfindBottomLeftValue(TreeNode root){if(root.left==null&&root.right==null){returnroot.val; }if(getDepth(root.left)>=getDepth(root.right)){returnfindBottomLeftValue(root.left); }else{returnfindBottomLeftValue(root.right); } }publicintgetDepth(TreeNode root){if(root ==null) {...
https://leetcode.com/problems/find-bottom-left-tree-value/ https://leetcode.com/problems/find-bottom-left-tree-value/discuss/98779/Right-to-Left-BFS-(Python-%2B-Java) https://leetcode.com/problems/find-bottom-left-tree-value/discuss/98786/verbose-java-solution-binary-tree-level-order-travers...
Given a binary tree, find the leftmost value in the last row of the tree. 就是拿到最后一层的第一个元素。 这个元素是最左下角的元素,不是最左侧的元素。 如果想实现 其实也很简单 就是维护更新每一层的第一个元素。 代码解读 class Solution { public int findBottomLeftValue(TreeNode root) { if...
1/**2* Definition for a binary tree node.3* struct TreeNode {4* int val;5* TreeNode *left;6* TreeNode *right;7* TreeNode(int x) : val(x), left(NULL), right(NULL) {}8* };9*/10classSolution {11public:12intfindBottomLeftValue(TreeNode*root) {13intresult = root->val;14que...
public class FindBottomLeftTreeValue { private int max = 0, result;public static class TreeNode { int val; TreeNode left; TreeNode right;TreeNode(int x) { val = x; } }public static void main(String[] args) throws Exception { TreeNode root = new TreeNode(1); root.left = new Tr...
classSolution{public:intfindBottomLeftValue(TreeNode*root){queue<TreeNode*>queue;queue.push(root);while(!queue.empty()){root=queue.front();queue.pop();if(root->right)queue.push(root->right);if(root->left)queue.push(root->left);}returnroot->val;}};...
57 changes: 57 additions & 0 deletions 57 513_Find_Bottom_Left_Tree_Value/test.go Original file line numberDiff line numberDiff line change @@ -0,0 +1,57 @@ package mainimport "fmt"type TreeNode struct { Val int Left *TreeNode
classSolution{public:intfindBottomLeftValue(TreeNode*root){queue<TreeNode*>q;//节点队列q.push(root);//根先入队TreeNode*tmp;//层遍历工作节点while(!q.empty()){//每次循环处理一层tmp=q.front();q.pop();//先右后左if(tmp->right)q.push(tmp->right);if(tmp->left)q.push(tmp->left);...
* TreeNode(int x) { val = x; } * } */classSolution{publicintfindBottomLeftValue(TreeNode root){ArrayDeque<TreeNode>queue=newArrayDeque<>();queue.add(root);intresult=0;while(!queue.isEmpty()){intsize=queue.size();result=queue.peek().val;for(inti=0;i<size;i++){TreeNode node=que...
Find Bottom Left Tree Value return findValue(nextLayer); } } }; Reference https://leetcode.com/problems/find-bottom-left-tree-value 30810 js实现 find 函数 // arr:要查找的数组,predict:要查找的 key 字符串 或 [key,value] 数组,或 对象{key,value},fromIndex:要从数组中第一个元素开始查,默认...