public int maxSubArray(int[] A) { int newsum=A[0]; int max=A[0]; for(int i=1;i<A.length;i++){ newsum=Math.max(newsum+A[i],A[i]); max= Math.max(max, newsum); } return max; } int maxSubArray(int *a, const int length) { ; ; ; i <length; i++) { sum_i =…

Description: 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. Thoughts: this prob…

这两个问题类似,都可利用动态规划思想求解. 一.最大连续子序列和 https://leetcode.com/problems/maximum-subarray/description/ https://www.geeksforgeeks.org/largest-sum-contiguous-subarray/ The core ideas are the same:         currentMax = max(nums[i], some_operation(currentMax, nums…

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. click to show more practice. Mor…

题目链接:https://leetcode.com/problems/maximum-subarray/ 算法类型:动态规划 题目分析:最大序列和 代码实现: class Solution(object): def maxSubArray(self, nums): """ :type nums: List[int] :rtype: int """ nums_len = len(nums) if nums_len == 1: return nums…

一直直到bug-free.不能错任何一点. 思路不清晰:刷两天. 做错了,刷一天. 直到bug-free.高亮,标红. 185,OA(YAMAXUN)--- (1) findFirstDuplicate string in a list of string. import java.util.HashSet; import java.util.Set; public class Solution { public static void main(String[] args) { String[…

------------------------------------------------------------第七周:Follow up question 1,寻找峰值 寻找峰值 描述 笔记 数据 评测 你给出一个整数数组(size为n),其具有以下特点: 相邻位置的数字是不同的 A[0] < A[1] 并且 A[n - 2] > A[n - 1] 假定P是峰值的位置则满足A[P] > A[P-1]且A[P] > A[P+1],返回数组中任意一个峰值的位置. 注意事项 数…

--------------------------------------------------------------- 本文使用方法:所有题目,只需要把标题输入lintcode就能找到.主要是简单的剖析思路以及不能bug-free的具体细节原因. ---------------------------------------------------------------- ------------------------------------------- 第九周:图和搜索. ---…

(记忆线:当时一刷完是1-205. 二刷88道.下次更新记得标记不能bug-free的原因.)   88-------------Perfect Squares(完美平方数.给一个整数,求出用平方数来相加得到最小的个数) public class Solution{ public static void main(String[] args){ System.out.println(numSquares(8)); } public static int numSquares(int n){ //…

Given an array of integers, find a contiguous subarray which has the largest sum. Notice The subarray should contain at least one number. Have you met this question in a real interview? Yes Example Given the array [−2,2,−3,4,−1,2,1,−5,3], the contigu…

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. 题意:就是求最大字数组和. 思路: DP问题,O(n)内可破 对…

1.   Maximum Subarray (#53) 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 s…

动态规划属于技巧性比较强的题目,如果看到过原题的话,对解题很有帮助 55. Jump Game Given an array of non-negative integers, you are initially positioned at the first index of the array. Each element in the array represents your maximum jump length at that position. Determine if you ar…

414. Third Maximum Number 给一个非空的整数数组,找到这个数组中第三大的值,如果不存在,那么返回最大的值.要求时间复杂度为o(n) 例如: Example 1: Input: [3, 2, 1] Output: 1 Explanation: The third maximum is 1. Example 2: Input: [1, 2] Output: 2 Explanation: The third maximum does not exist, so the maxi…

463. Island Perimeterhttps://leetcode.com/problems/island-perimeter/就是逐一遍历所有的cell,用分离的cell总的的边数减去重叠的边的数目即可.在查找重叠的边的数目的时候有一点小技巧,就是沿着其中两个方向就好,这种题目都有类似的规律,就是可以沿着上三角或者下三角形的方向来做.一刷一次ac,但是还没开始注意codestyle的问题,需要再刷一遍. class Solution { public: int islandPerime…

Question: Find the contiguous subarray within an array (containing at least one number) that has the largest sum. For example, given the array [2, 1, –3, 4, –1, 2, 1, –5, 4], The contiguous array [4, –1, 2, 1] has the largest sum = 6. 此问题提供了两种解决方案,首先…

Maximum Subarray 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. More practice:…

Remove Duplicates from Sorted Array 思路:两个指针,头指针在0,尾指针从1开始寻找,找到第一个不等于头指针值的数,覆盖掉头指针后面那个数,然后尾指针往后移. public int removeDuplicates(int[] nums) { if(nums.length <= 1) return nums.length; int i = 0; for(int j = 1; j < nums.length; j++){ if(nums[i] != nums[j…

To the Max Time Limit: 1000MS   Memory Limit: 10000K Total Submissions: 39081   Accepted: 20639 Description Given a two-dimensional array of positive and negative integers, a sub-rectangle is any contiguous sub-array of size 1*1 or greater located wi…

题目链接:Maximum Product Subarray solutions同步在github 题目很简单,给一个数组,求一个连续的子数组,使得数组元素之积最大.这是求连续最大子序列和的加强版,我们可以先看看求连续最大子序列和的题目maximum-subarray,这题不难,我们举个例子. 假设数组[1, 2, -4, 5, -1, 10],前两个相加后得到3,更新最大值(为3),然后再加上-4后,和变成-1了,这时我们发现如果-1去加上5,不如舍弃前面相加的sum,5单独重新开始继续往后相加…

Maximum Subarray 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. More practice:…

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. click to show more practice. Mo…

最长回文子序列 int lpsDp(char * str,int n){ int dp[n][n], tmp; memset(dp,0,sizeof(dp)); for(int i=0; i<n; i++) dp[i][i] = 1; // i 表示 当前长度为 i+1的 子序列 for(int i=1; i<n; i++){ tmp = 0; //考虑所有连续的长度为i+1的子串. 该串为 str[j, j+i] for(int j=0; j+i<n; j++){ //如果首尾相同 i…

https://leetcode.com/problems/maximum-subarray/ 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 l…

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. click to show more practice. Mor…

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. 解题思路: 本题目是<算法导论> 4.1 节 最大子数组的原…

博客搬至blog.csgrandeur.com,cnblogs不再更新. 新的题解会更新在新博客:http://blog.csgrandeur.com/2014/01/15/LeetCode-OJ-Solution/ ———————————————————————————————————————— ———————————————————————————————————————— LeetCode OJ 题解 LeetCode OJ is a platform for preparing tech…

题目来源 https://leetcode.com/problems/maximum-subarray/ 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…

Given an array of integers and a number k, find k non-overlapping subarrays which have the largest sum. The number in each subarray should be contiguous. Return the largest sum. Note The subarray should contain at least one number Example Given [-1,4…

<编程之美>183页,问题2.14——求子数组的字数组之和的最大值.(整数数组) 我开始以为可以从数组中随意抽调元素组成子数组,于是就有了一种想法,把最大的元素抽出来,判断是大于0还是小于等于0,如果大于0就对除了这个最大值外剩下的数组部分进行递归: using System; using System.Collections.Generic; using System.Linq; namespace MaxSumSubArray { class Program { static void M…