算法层序遍历对称二叉树的相关内容

文章 2023-11-16 来自：开发者社区

代码随想录算法训练营第十四天 | LeetCode 102. 二叉树的层序遍历、LeetCode 226. 翻转二叉树、LeetCode 101. 对称二叉树

1. LeetCode 102. 二叉树的层序遍历1.1 思路二叉树的层序遍历就相当于图论里的广度优先搜索，之前的递归遍历就相当于图论里的深度优先搜索只依赖二叉树的结构本身是无法做到层序遍历的，因此需要借助一个队列的数据结构首先将根节点放入，每一层要记录当时队列的长度，这个长度就相当于这层有几个元素，然后根据这个长度把每一层的元素弹出放入一个集合中，因为层序遍历返回的是List<List&a...

文章 2023-08-31 来自：开发者社区

算法训练Day16|● 层序遍历 10 ● 226.翻转二叉树 ● 101.对称二叉树 2

LeetCode:层序遍历 10二叉树的层序遍历-力扣（leetcode）1.思路:递归实现层序遍历，需要deep记录深度便于数值插入对应层的子序列中。①确定递归函数的参数和返回值：当前节点及其深度deep②确定终止条件：当前节点为空时返回③确定单层递归逻辑：2.代码实现 1class Solution { 2 List<List<Integer>> resLis...

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