1. Two Sum (2 sum) 提交网址: https://leetcode.com/problems/two-sum/ Total Accepted: 216928 Total Submissions:953417 Difficulty:Easy ACrate: 22.8% Given an array of integers, return indices of the two numbers such
std::vector<int>nums {2,3,11,15};inttarget =0; Solution sol; std::vector<int> res =sol.twoSum(nums, target);if(res.empty()) { std::cout<<"Failed.\n";return-1; }for(auto i: res) { std::cout<< i <<"\t"; } std::cout<<"\n";return0; }//g++ two_sum.cpp -std=...
这样我们创建一个哈希表,对于每一个 x,我们首先查询哈希表中是否存在 target - x,然后将 x 插入到哈希表中,即可保证不会让 x 和自己匹配。 class Solution: def twoSum(self, nums: List[int], target: int) -> List[int]: hashtable = dict() for i, num in enumerate(nums): if target - num ...
因此我们可以用两个for循环遍历整个数组,找到这个数组中两个值的和等于这个给定值的数组下标并输出。 回到顶部 三、Go代码 //1_常规解法func twoSum(nums []int, targetint) []int{varresult = [2]int{0,0}iflen(nums) <2{returnnil }fori :=0; i < len(nums) -1; i++{forj := i +1; j...
leetcode-solution C++【1】---two sum emm,leetcode 第一道原题网址https://leetcode.com/problems/two-sum/description/ 第一题题目简单,这里就不翻译啦 解题方案一,这里的时间复杂度为O(n^2) 属于brute force型 这里vector类称作向量类,它实现了动态数组,用于元素数量变化的对象数组。像数组一样,vector...
Can you solve this real interview question? Two Sum - Given an array of integers nums and an integer target, return indices of the two numbers such that they add up to target. You may assume that each input would have exactly one solution, and you may n
LeetCode_1. Two Sum_Solution,原题链接原题中文链接一、题目描述二、题目分析1,常规解法这道题目的意思是给定一个数组和一个值,要求出这个数组中两个值的和等于这个给定值target。输出是有要求的:坐标较小的放在前面,较大的放在后面。这俩坐标不能为零。因此我们可以
Solution 1. 暴力求解 最直接的方法,进行暴力求解,进行两次遍历。代码如下: 该代码性能表现:(性能低,耗时长) Your memory usage beats92.16 %of cpp submissions. Runtime: 408 ms Memory Usage: 9.3 MB 1. vector<int> twoSum_lowPerformance(vector<int> &nums, int target) ...
nums = [2,7,11,15] & target = 9 -> [0,1], 2 + 7 = 9 At each num, calculate complement, if exists in hash map then return Time: O(n) Space: O(n) */ class Solution { public: vector<int> twoSum(vector<int>& nums, int target) { int n = nums.size(); unordered_map...
master leetcode/1. two_sum.cpp Go to file Cannot retrieve contributors at this time 30 lines (26 sloc) 952 Bytes Raw Blame #include <map>class Solution { public: vector<int> twoSum(vector<int>& nums, int target) {vector<int> result;...