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: TrueExample 2: Input: 5 / \ 3 6 / \ \ 2 4…

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…

Given an array of integers that is already sorted in ascending order, find two numbers such that they add up to a specific target number. The function twoSum should return indices of the two numbers such that they add up to the target, where index1 m…

给定一个二叉搜索树和一个目标结果,如果 BST 中存在两个元素且它们的和等于给定的目标结果,则返回 true. struct TreeNode { int val; struct TreeNode *left; struct TreeNode *right; TreeNode(int x) : val(x), left(NULL), right(NULL) { } }; class Solution { public: TreeNode* node; bool findTarget(TreeNo…

题目要求 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. 题目分析及思路 给定一个二叉搜索树和一个目标值,若该树中存在两个元素的和等于目标值则返回true.可以先获得树中所有结点的值列表,然后遍历每个值,判断目标值与该值的差是否也在该列表中,并保存每…

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…

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…

给定一个已按照升序排列 的有序数组,找到两个数使得它们相加之和等于目标数.函数应该返回这两个下标值 index1 和 index2,其中 index1 必须小于 index2.请注意,返回的下标值(index1 和 index2)不是从零开始的.你可以假设每个输入都只有一个解决方案,而且你不会重复使用相同的元素.输入:数组 = {2, 7, 11, 15}, 目标数 = 9输出:index1 = 1, index2 = 2详见:https://leetcode.com/problems/two-…

1.two sum 用hash来存储数值和对应的位置索引,通过target-当前值来获得需要的值,然后再hash中寻找 错误代码1: Input:[3,2,4]6Output:[0,0]Expected:[1,2] 同一个数字不能重复使用,但这个代码没排除这个问题 class Solution { public: vector<int> twoSum(vector<int>& nums, int target) { vector<int> result; uno…

problem 653. Two Sum IV - Input is a BST 参考 1. Leetcode_easy_653. Two Sum IV - Input is a BST; 完…