Binary Tree Preorder Traversal —— LeetCode

【Binary Tree Preorder Traversal —— LeetCode】的更多相关文章

Binary Tree Preorder Traversal —— LeetCode

Given a binary tree, return the preorder traversal of its nodes' values. For example:Given binary tree {1,#,2,3}, 1 \ 2 / 3 return [1,2,3]. Note: Recursive solution is trivial, could you do it iteratively? 题目大意:非递归方式实现二叉树的前序遍历. 解题思路:自己实现一个栈,循环(根节点直接入…

Binary Tree Preorder Traversal leetcode java

题目: Given a binary tree, return the preorder traversal of its nodes' values. For example: Given binary tree {1,#,2,3}, 1 \ 2 / 3 return [1,2,3]. Note: Recursive solution is trivial, could you do it iteratively? 题解: 递归做法如下: …

Binary Tree Preorder Traversal -- leetcode

Given a binary tree, return the preorder traversal of its nodes' values. For example: Given binary tree {1,#,2,3}, 1 \ 2 / 3 return [1,2,3]. Note: Recursive solution is trivial, could you do it iteratively? 算法一,栈前序遍历. 1.訪问根结点 2.訪问左子树 3.訪问右子树题目要求不使用…

Binary Tree Preorder Traversal -- LEETCODE 144

方法一:(迭代) class Solution { public: vector<int> preorderTraversal(TreeNode* root) { vector<int> v; if(root == NULL) return v; stack<TreeNode *> s; s.push(root); TreeNode *curNode = NULL; while(!s.empty()) { curNode = s.top(); s.pop(); v.pu…

C++版 - LeetCode 144. Binary Tree Preorder Traversal (二叉树先根序遍历，非递归)

144. Binary Tree Preorder Traversal Difficulty: Medium Given a binary tree, return the preorder traversal of its nodes' values. For example:Given binary tree {1,#,2,3}, 1 \ 2 / 3 return [1,2,3]. Note: Recursive solution is trivial, could you do it it…

LeetCode 144. 二叉树的前序遍历(Binary Tree Preorder Traversal)

144. 二叉树的前序遍历 144. Binary Tree Preorder Traversal 题目描述给定一个二叉树,返回它的前序遍历. LeetCode144. Binary Tree Preorder Traversal 示例: 输入: [1,null,2,3] 1 \ 2 / 3 输出: [1,2,3] 进阶: 递归算法很简单,你可以通过迭代算法完成吗? Java 实现 Iterative Solution import java.util.LinkedList; import…

【LeetCode】Binary Tree Preorder Traversal

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

【Binary Tree Preorder Traversal —— LeetCode】的更多相关文章

Binary Tree Preorder Traversal —— LeetCode

Binary Tree Preorder Traversal leetcode java

Binary Tree Preorder Traversal -- leetcode

Binary Tree Preorder Traversal -- LEETCODE 144

C++版 - LeetCode 144. Binary Tree Preorder Traversal (二叉树先根序遍历，非递归)

LeetCode 144. 二叉树的前序遍历(Binary Tree Preorder Traversal)

【LeetCode】Binary Tree Preorder Traversal

Binary Tree Preorder Traversal on LeetCode in Java

【LeetCode】144. Binary Tree Preorder Traversal (3 solutions)

LeetCode: Binary Tree Preorder Traversal 解题报告