Console.ReadKey(); }publicint[] TwoSum(int[] nums,inttarget) {vardictionary=newDictionary<int,int>();for(inti =0; i < nums.Length; i++) {varnn = target -nums[i];if(dictionary.ContainsKey(nn)) {returnnewint[]{ dictionary[nn],i}; } dictionary[nums[i]]=i; }thrownewArgumentExcep...
int* twoSum(int* nums, int numsSize, int target, int* returnSize){ int *result = (int *)malloc(2 * sizeof(int)); bool found = false; for(int i = 0; i < numsSize - 1; i++){ if(!found){ for(int j = i + 1; j < numsSize; j++){ if(nums[i] + nums[j] == ta...
解决方案一:双层循环 1vector<int> two_sum(vector<int> &src_vec,inttagert)2{3vector<int> result;//结果容器 存放2个结果索引值//vector作局部变量返回会自动析构4for(size_t i =0; i < src_vec.size() -1; ++i)5{6for(size_t j = i +1; j < src_vec.size(); ++j)7{8if(tagert ...
vector<vector<int>> fourSum(vector<int>& num,inttarget) { vector<vector<int>>result;if(num.size() <4)returnresult; sort(num.begin(), num.end()); auto last=num.end();for(auto a = num.begin(); a < prev(last,3); ++a) {for(auto b = next(a); b < prev(last,2); ++b)...
vector<int> twoSum(vector<int>& nums, int target) {vector<int> result; std::multimap <int, int> value; std::vector<int>::const_iterator cit = nums.begin();int index =0; for (; cit != nums.end() ; index++, cit++) {
针对2Sum,先对数组排序,然后使用双指针匹配可行解就可以解决,虽然可以考虑使用HashMap加速搜索,但是对于本题使用HashMap的与否的时间复杂度都一样,都是O(nlog(n))。可以参考这个链接: 求和问题总结(leetcode 2Sum, 3Sum, 4Sum, K Sum),写的很清楚。
The function twoSum should return indices of the two numbers such that they add up to the target, where index1 must be less than index2. Please note that your returned answers (both index1 and index2) are not zero-based. You may assume that each input would have exactly one solution....
leetcode - two-sum Q 给定一个整数数组 nums 和一个目标值 target,请你在该数组中找出和为目标值的那 两个 整数,并返回他们的数组下标。 你可以假设每种输入只会对应一个答案。但是,数组中同一个元素不能使用两遍。 示例: 代码语言:javascript 复制...
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