Given an array nums and a target value k, find the maximum length of a subarray that sums to k. If there isn’t one, return 0 instead. Hashmap is also used in this problem. Iterate the array and calculate the sum, if map[sum-k] in the hashmap, update the maxlength=max(maxlength...
classSolution {public:intmaxSubArrayLen(vector<int>& nums,intk) {if(nums.empty())return0;intres =0; unordered_map<int, vector<int>>m; m[nums[0]].push_back(0); vector<int> sum =nums;for(inti =1; i < nums.size(); ++i) { sum[i]+= sum[i -1]; m[sum[i]].push_back(i...
Maximum Size Subarray Sum Equals k -- LeetCode Given an arraynumsand a target valuek, find the maximum length of a subarray that sums tok. If there isn't one, return 0 instead. Example 1: Givennums=[1, -1, 5, -2, 3],k=3, return4. (because the subarray[1, -1, 5, -2]su...
classSolution {public:intmaxSubArrayLen(vector<int>& nums,intk) {intsum =0, res =0; unordered_map<int,int>m;for(inti =0; i < nums.size(); ++i) { sum+=nums[i];if(sum == k) res = i +1;elseif(m.count(sum - k)) res = max(res, i - m[sum -k]);if(!m.count(sum...
Given an array nums and a target value k, find the maximum length of a subarray that sums to k. If there isn't one, return 0 instead. Note:The sum of the entire nums array is guaranteed to fit within the 32-bit signed integer range. Example 1: Given nums = [1, -1, 5, -2...
Given an array nums and a target value k, find the maximum length of a subarray that sums to k. If there isn’t one, return 0 instead. this is a really easy undetstanding problem. and the follow up is do it in O(n) time. ...
Given an arraynumsand a target valuek, find the maximum length of a subarray that sums tok. If there isn't one, return 0 instead. Note: The sum of the entirenumsarray is guaranteed to fit within the 32-bit signed integer range. ...
992.Subarrays-with-K-Different-Integers (H-) 3134.Find-the-Median-of-the-Uniqueness-Array (H-) 2461.Maximum-Sum-of-Distinct-Subarrays-With-Length-K (M) 2537.Count-the-Number-of-Good-Subarrays (M+) 3298.Count-Substrings-That-Can-Be-Rearranged-to-Contain-a-String-II (M+) 3306.Count...
https://leetcode.cn/problems/subarrays-distinct-element-sum-of-squares-ii 如果求的是“和”而不是“平方和”,那就和周赛291最后一题一样,连Hard都达不到。不过“平方和”问题就复杂很多,不但需要lazy线段树这一高级数据结构来做区间更新,而且有一定的数学成分,需要在维护区间平方和的同时,保证区间和也能够快...
0321 Create Maximum Number 28.8% Hard 0322 Coin Change Go 41.5% Medium 0323 Number of Connected Components in an Undirected Graph 62.0% Medium 0324 Wiggle Sort II Go 32.9% Medium 0325 Maximum Size Subarray Sum Equals k 49.3% Medium 0326 Power of Three Go 45.2% Easy 0327 Count of...