590. N叉树的后序遍历 590. N-ary Tree Postorder Traversal 题目描述 给定一个 N 叉树,返回其节点值的后序遍历. LeetCode590. N-ary Tree Postorder Traversal 例如,给定一个 3 叉树: 返回其后序遍历: [5,6,3,2,4,1]. 说明: 递归法很简单,你可以使用迭代法完成此题吗? Java 实现 Iterative Solution import java.util.LinkedList; import j…

Binary Tree Postorder Traversal Given a binary tree, return the postorder traversal of its nodes' values. For example:Given binary tree {1,#,2,3}, 1 \ 2 / 3 return [3,2,1]. Note: Recursive solution is trivial, could you do it iteratively? 解法一:递归法 /**…

Given an n-ary tree, return the postorder traversal of its nodes' values. For example, given a 3-ary tree: Return its postorder traversal as: [5,6,3,2,4,1]. Note: Recursive solution is trivial, could you do it iteratively? ---------------------------…

作者: 负雪明烛 id: fuxuemingzhu 个人博客:http://fuxuemingzhu.cn/ 目录 题目描述 题目大意 解题方法 递归 迭代 日期 题目地址:https://leetcode.com/problems/binary-tree-postorder-traversal/ 题目描述 Given a binary tree, return the postorder traversal of its nodes' values. Example: Input: [1,nu…

Problem Link: http://oj.leetcode.com/problems/binary-tree-postorder-traversal/ The post-order-traversal of a binary tree is a classic problem, the recursive way to solve it is really straightforward, the pseudo-code is as follows. RECURSIVE-POST-ORDE…

Given a binary tree, return the postorder traversal of its nodes' values. For example:Given binary tree {1,#,2,3}, 1 \ 2 / 3 return [3,2,1]. Note: Recursive solution is trivial, could you do it iteratively? 1.递归算法的递归定义是: 若二叉树为空,则遍历结束:否则⑴ 后序遍历左子树(递归调用…

Given a binary tree, return the postorder traversal of its nodes' values. For example:Given binary tree {1,#,2,3}, 1 \ 2 / 3 return [3,2,1]. Note: Recursive solution is trivial, could you do it iteratively? Subscribe to see which companies asked this…

Given a binary tree, return the postorder traversal of its nodes' values. For example:Given binary tree {1,#,2,3}, 1 \ 2 / 3 return [3,2,1]. Note: Recursive solution is trivial, could you do it iteratively? Subscribe to see which companies asked this…

这是悦乐书的第269次更新,第283篇原创 01 看题和准备 今天介绍的是LeetCode算法题中Easy级别的第136题(顺位题号是590).给定一个n-ary树,返回其节点值的后序遍历.例如,给定一个3-ary树: 1 / | \ 3 2 4 / \ 5 6 其后序遍历结果为:[5,6,3,2,4,1]. 注意:递归解决方案是微不足道的,你可以用迭代的方式做吗? 本次解题使用的开发工具是eclipse,jdk使用的版本是1.8,环境是win7 64位系统,使用Java语言编写和测试. 02…

Difficulty: Hard  More:[目录]LeetCode Java实现 Description https://leetcode.com/problems/binary-tree-postorder-traversal/ Given a binary tree, return the postordertraversal of its nodes' values. Example: Input: [1,null,2,3] 1 \ 2 / 3 Output: [3,2,1] Foll…