t_063_590_n_ary_tree_postorder_traversal

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Published: May 31, 2023 License: Apache-2.0 Imports: 0 Imported by: 0

README

https://leetcode.cn/problems/n-ary-tree-postorder-traversal/
590. N 叉树的后序遍历
简单

给定一个 n 叉树的根节点 root ,返回 其节点值的 后序遍历 。

n 叉树 在输入中按层序遍历进行序列化表示,每组子节点由空值 null 分隔(请参见示例)。

 

示例 1:

输入:root = [1,null,3,2,4,null,5,6]
输出:[5,6,3,2,4,1]

示例 2:

输入:root = [1,null,2,3,4,5,null,null,6,7,null,8,null,9,10,null,null,11,null,12,null,13,null,null,14]
输出:[2,6,14,11,7,3,12,8,4,13,9,10,5,1]

 

提示:

    节点总数在范围 [0, 104] 内
    0 <= Node.val <= 104
    n 叉树的高度小于或等于 1000

 

进阶:递归法很简单,你可以使用迭代法完成此题吗?

Documentation

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Constants

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Variables

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Functions

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Types

type Node

type Node struct {
	Val      int
	Children []*Node
}

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