leetcode

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Published: Dec 11, 2024 License: MIT Imports: 3 Imported by: 0

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515. Find Largest Value in Each Tree Row

题目

You need to find the largest value in each row of a binary tree.

Example:

Input: 

          1
         / \
        3   2
       / \   \  
      5   3   9 

Output: [1, 3, 9]

题目大意

求在二叉树的每一行中找到最大的值。

解题思路

  • 给出一个二叉树,要求依次输出每行的最大值
  • 用 BFS 层序遍历,将每层排序取出最大值。改进的做法是遍历中不断更新每层的最大值。

Documentation

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

This section is empty.

Types

type TreeNode

type TreeNode = structures.TreeNode

TreeNode define

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