int getLongestSubarry(vector<int> &vec, int k){ int sum=0, res=0; map<int, int> sum_map; for(int idx=0; idx<vec.size(); ++idx){ sum += vec[idx]; if(sum<=k) res = idx+1; //此处修改 else { //前n项和大于sum-k并且需要最早的,此时子数组长度最长 map<int,int>::iterat...
Maximum Subarray with Sum/ Multiply Find the contiguous subarray within an array (containing at least one number) which has the largest sum. For example, given the array[−2,1,−3,4,−1,2,1,−5,4], the contiguous subarray[4,−1,2,1]has the largest sum =6. View Code What...
public int numSubarraysWithSum(int[]A,intS) { return atMost(A,S) - atMost(A,S- 1); } private int atMost(int[]A,intS) { if (S< 0) return 0; int res = 0, n =A.length; for (inti= 0,j= 0;j<n; ++j) {S-=A[j]; while (S< 0)S+=A[i++]; res += j - i...
public int numSubarraysWithSum(int[] A, int S) { if (A.length == 0) return 0; int result = 0; int[] sumOne = new int[A.length]; int st = 0; int ed = 0; sumOne[0] = A[0] == 1 ? 1 : 0; for (int i = 1; i < A.length; i++) { sumOne[i] = A[i] =...
lintcode:Subarray Sum Closest Given an integer array, find a subarray with sum closest to zero. Return the indexes of the first number and last number. Example Given [-3, 1, 1, -3, 5], return [0, 2], [1, 3], [1, 1], [2, 2] or [0, 4]....
C++ implementation to find subarray with given sum #include<bits/stdc++.h>usingnamespacestd;vector<int>find(vector<int>a,intn,ints){vector<int>b;//output vectorintcur_sum=0;for(inti=0;i<n;i++){cur_sum=a[i];//cur_suming elementfor(intj=i+1;j<n;j++){//add next element conti...
Returnthe lengthofthe shortest,non-empty,contiguous subarrayofAwithsum at least K.Ifthereisnonon-empty subarraywithsum at least K,return-1.EXAMPLE:Input:A=[2,-1,2],K=3Output:3---Input:A=[1,2],K=4Output:-1---Input:A=[84,-37,32,40,95],K=167Output:3 I have tried 2-pointers...
Leetcode: Subarray Sum Equals K\\\Binary Subarrays With Sum Problem Given an array of integers and an integer k, you need to find the total number of continuous subarrays whose sum equals to k. Example 1: Input: nums = [1,1,1], k = 2 Output: 2 Note: The length......
2.Smallest Subarray with a given sum(easy) 2.1 问题描述 2.2 解决方法 2.3 代码 3.课后回顾 4.参考链接 sliding window pattern 1.原理描述 滑动窗口模式(sliding window pattern)是用于在给定数组或链表的特定窗口大小上执行所需的操作,比如寻找包含所有 1 的最长子数组。从第一个元素开始滑动窗口并逐个元素...
Return the length of the shortest, non-empty, contiguous subarray of A with sum at least K. If there is no non-empty subarray with sum at least K, return -1. EXAMPLE: Input: A = [2,-1,2], K = 3 Output: 3 --- Input: A = [1,2], K = 4 Output: -1 --- Input: A ...