3~5的size怎么计算呢?---> i - map.get(sum - k)在这个例子里就是5-2 代码如下: public int maxSubArrayLen(int[] nums, int k) { int sum = 0, max = 0; HashMap<Integer, Integer> map = new HashMap<Integer, Integer>(); for (int i = 0; i < nums.length; i++) { sum = ...
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...
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...
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,...
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...
Explanation: The subarray[1, -1, 5, -2]sums to 3 and is the longest. 1. 1. 1. 首先计算出数组的前缀和,数组变为[1, 0, 5,3,6]。接着遍历这个前缀和的数组,用hashmap记录<prefix sum, i> -每个不同的前缀和和他们出现的位置。如果此时发现nums[i] - k在hashmap中,则res = Math.max(...
LeetCode325 Maximum size subarray sum equals K(Not Really Understand),Givenanarraynumsandatargetvaluek,findthemaximumlength...
Leetcode 325: Maximum Size Subarray Sum Equals k 分类:Hash 难度:M 描述:给了一个数组,一个数字k,问数组中子序列中,相加等于k的最长子序列的长度。 链接: Maximum Size Subarray Sum Equals k. 思路: 使用一个字典,建立到当前位置的元素累加和与元素位置的一个映射,即dict:sum -> i。然后在寻...猜...
package leetcode import "math" func maxSubarraySumCircular(nums []int) int { var max1, max2, sum int // case: no circulation max1 = int(math.Inf(-1)) l := len(nums) for i := 0; i < l; i++ { sum += nums[i] if sum > max1 { max1 = sum } if sum < 1 { sum ...
Can you solve this real interview question? Maximum Sum of Two Non-Overlapping Subarrays - Given an integer array nums and two integers firstLen and secondLen, return the maximum sum of elements in two non-overlapping subarrays with lengths firstLen and