}// 左子树inOrder(node.left, list);// 根节点list.add(node.val);// 右子树inOrder(node.right, list); } } 04 第三种解法 我们也可以使用HashSet,思路和第一种解法类似,依旧使用递归遍历BST的节点,但是此解法是直接在递归方法里面做了判断,如果里面存在两个节点值的话,就直接返回true。 /** * Defi...
今天介绍的是LeetCode算法题中Easy级别的第148题(顺位题号是653)。给定二进制搜索树和目标数,如果BST中存在两个元素,使得它们的总和等于给定目标,则返回true。例如: 5 / \ 3 6 / \ \ 2 4 7 目标值:9 输出:true 5 / \ 3 6 / \ \ 2 4 7 ...
nums.push_back(node->val); inorder(node->right, nums); } }; 类似题目: Two Sum III - Data structure design Two Sum II - Input array is sorted Two Sum 参考资料: https://leetcode.com/problems/two-sum-iv-input-is-a-bst/ https://leetcode.com/problems/two-sum-iv-input-is-a-bst/...
Given a Binary Search Tree and a target number, return true if there exist two elements in the BST such that their sum is equal to the given target. Example 1: Input: 5 / \ 3 6 / \ \ 2 4 7 Target = 9 Output: True Example 2: Input: 5 / \ 3 6 / \ \ 2 4 7 Targe...
Can you solve this real interview question? Two Sum IV - Input is a BST - Given the root of a binary search tree and an integer k, return true if there exist two elements in the BST such that their sum is equal to k, or false otherwise. Example 1:
use std::rc::Rc;/**653. Two Sum IV - Input is a BSThttps://leetcode.com/problems/two-sum-iv-input-is-a-bst/Given the root of a Binary Search Tree and a target number k, return true if there exist two elements in the BST such that their sum is equal to the given target.*...
Given a Binary Search Tree and a target number, return true if there exist two elements in the BST such that their sum is equal to the given target. Example 1: Input: 5 / \ 3 6 / \ \ 2 4 7 Target = 9 Output: True Example 2: ...
653. Two Sum IV - Input is a BST 很简单的题,可以深度优先,也可广度优先。 # Definition for a binary tree node.# class TreeNode(object):# def __init__(self, x):# self.val = x# self.left = None# self.right = NoneclassSolution(object):deffindTarget(self,root,k):""" ...
Given a Binary Search Tree and a target number, return true if there exist two elements in the BST such that their sum is equal to the given target. Example 1: Input: 5 / \ 3 6 / \ \ 2 4 7 Target = 9 Output: True 1. ...
:pencil: Python / C++ 11 Solutions of All LeetCode Questions - LeetCode/two-sum-iv-input-is-a-bst.cpp at master · evilchaos/LeetCode