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Subarray
Maximum
Subarray
Findthecontiguoussubarraywithinanarray(containingatleastonenumber)whichhasthelargestsum.Forexample,giventhearray[-2,1,-3,4,-1,2,1,-5,4],thecontiguoussubarray[4,-1,2,1]hasthelargestsum=6.publicclassSol
juexin
·
2019-11-05 03:00
Maximum
Subarray
题目描述:Findthecontiguoussubarraywithinanarray(containingatleastonenumber)whichhasthelargestsum.Forexample,giventhearray[-2,1,-3,4,-1,2,1,-5,4],thecontiguoussubarray[4,-1,2,1]hasthelargestsum=6.即找出一个给定数组
ShutLove
·
2019-11-04 12:49
Maximum Product
Subarray
Medium,DynamicProgrammingQuestion找到积最大的子序列Forexample序列[2,3,-2,4]的最大积序列为[2,3]积为6Solution与子序列最大和类似,不过需要考虑局部最大积和局部最小积,因为局部最小积为负数时与一个负数相乘可能成为最大积classSolution(object):defmaxProduct(self,nums):""":typenums:
穿越那片海
·
2019-11-02 07:59
Minimum Size
Subarray
Sum
MinimumSizeSubarraySum问题分析找出总和大于目标值的最短子串,想到的方法是用双指针遍历,前面的指针先前走直到大于目标,此时后面的指针再向前走,直到小于目标。代码classSolution{public:intminSubArrayLen(ints,vector&nums){inti=0,j=0;intsum=0,min_len=INT_MAX,len=0;while(j=s){
BigBig_Fish
·
2019-11-02 06:58
动态规划法(八)最大子数组问题(maximum
subarray
problem)
问题简介 本文将介绍计算机算法中的经典问题——最大子数组问题(maximumsubarrayproblem)。所谓的最大子数组问题,指的是:给定一个数组A,寻找A的和最大的非空连续子数组。比如,数组A=[-2,-3,4,-1,-2,1,5,-3],最大子数组应为[4,-1,-2,1,5],其和为7。 首先,如果A中的元素全部为正(或非负数),则最大子数组就是它本身;如果A中的元素全部为负,则最
山阴少年
·
2019-11-01 04:10
Maximum
Subarray
] 难度[easy]
题目Findthecontiguoussubarraywithinanarray(containingatleastonenumber)whichhasthelargestsum.Forexample,giventhearray[-2,1,-3,4,-1,2,1,-5,4],thecontiguoussubarray[4,-1,2,1]hasthelargestsum=6.解题思路题目大意是给定一
腾古
·
2019-10-31 17:58
Maximum
Subarray
QuestionFindthecontiguoussubarraywithinanarray(containingatleastonenumber)whichhasthelargestsum.Forexample,giventhearray[-2,1,-3,4,-1,2,1,-5,4],thecontiguoussubarray[4,-1,2,1]hasthelargestsum=6.thirda
i_Eloise
·
2019-10-31 16:02
Shortest Unsorted Continuous
Subarray
weeklycontest32的第一题。这题我一开始就想着把每个子串都拿出来sort一遍再放回去,跟sort完的对比一下。但是复杂度太高(O(n2)),TLE了(但是用熟了System.arraycopy(nums,0,temp,0,nums.length);这个方法。。)。如下:Approach1:BRUTEFORCE(TIMELIMITEXCEEDED)publicintfindUnsorte
DrunkPian0
·
2019-10-31 00:33
Maximum
Subarray
/***53.MaximumSubarray*https://leetcode.com/problems/maximum-
subarray
/description/*https://www.cnblogs.com
johnny_zhao
·
2019-10-30 00:00
The Day Two 找到一个具有最大和的连续子数组,返回其最大和
来源:力扣(LeetCode)链接:https://leetcode-cn.com/problems/maximum-
subarray
著作权归领扣网络所有。商业转载请联
jiyanjiao
·
2019-10-22 11:00
Maximum Sum Circular
Subarray
环形子数组的最大和
GivenacirculararrayCofintegersrepresentedbyA,findthemaximumpossiblesumofanon-emptysubarrayofC.Here,acirculararraymeanstheendofthearrayconnectstothebeginningofthearray.(Formally,C[i]=A[i]when0=0.)Also,
Grandyang
·
2019-10-21 21:00
课堂作业
求最大子数组之和1.程序#includeintFind_Max_Crossing_
SubArray
(intA[],intlow,intmid,inthigh){intleft_sum=-0xff;intsum
dunyaowu
·
2019-10-17 09:00
LeetCode 674. Longest Continuous Increasing Subsequence最长连续递增序列 (C++/Java)
题目:Givenanunsortedarrayofintegers,findthelengthoflongestcontinuousincreasingsubsequence(
subarray
).Example1
silentteller
·
2019-10-14 23:00
Maximum
Subarray
Givenanintegerarraynums,findthecontiguoussubarray(containingatleastonenumber)whichhasthelargestsumandreturnitssum.Example:Input:[-2,1,-3,4,-1,2,1,-5,4],Output:6Explanation: [4,-1,2,1]hasthelargestsum=
xuan_abc
·
2019-10-13 23:00
[LeetCode 560]
Subarray
Sum Equals K
Givenanarrayofintegersandanintegerk,youneedtofindthetotalnumberofcontinuoussubarrayswhosesumequalstok.Example1:Input:nums=[1,1,1],k=2Output:2Note:Thelengthofthearrayisinrange[1,20,000].Therangeofnumbe
lz87
·
2019-09-29 06:00
Different GCD
Subarray
Query HDU - 5869(树状数组,离线)
题目链接:HDU-5869题意:一组序列,多次询问,询问区间[l,r][l,r][l,r]gcd不同的子区间有多少个。通过预处理,将问题转化为二维数点问题。预处理所有以i为右端点的不同gcd的值以及开头位置。用vector>v[maxn]来存,并且其值是非严格递减的,位置是递减的,并且如果一个gcd出现多次只储存靠后位置的。然后就是套路了,按查询右端点排序,二维数点那样做就可以了。#include
cy41
·
2019-09-19 13:20
树状数组
Maximum
Subarray
很简单的dp操作。importnumpyasnpclassSolution:defmaxSubArray(self,nums:List[int])->int:l=len(nums)dp=np.zeros(l)dp[0]=nums[0]foriinrange(1,l):ifdp[i-1]<=0:dp[i]=nums[i]else:dp[i]=dp[i-1]+nums[i]returnint(max(
Emma1997
·
2019-09-12 22:18
leetcode
Maximum
Subarray
Sum with One Deletion 的解法(数组去除元素)
题目为:给你一个整数数组,返回它的某个非空子数组(连续元素)在执行一次可选的删除操作后,所能得到的最大元素总和。换句话说,你可以从原数组中选出一个子数组,并可以决定要不要从中删除一个元素(只能删一次哦),(删除后)子数组中至少应当有一个元素,然后该子数组(剩下)的元素总和是所有子数组之中最大的。注意,删除一个元素后,子数组不能为空。题目分析:即动态规划的最基本题型”连续子数组的最大和“的升级版,可
dong_beijing
·
2019-09-08 23:36
c++
2019牛客暑期多校训练营(第二场)J-
Subarray
(思维)
>传送门0$的区间数量分析题目意思很简单,对不对~那接下来我们就思考下该怎么做这题。考虑做前缀和,问题就转化成$sum[i]-sum[j]>0$的对数举个栗子,比如序列$\left\{-1,-1,-1,1,1,1,1\right\}$,对应的前缀和为$\left\{-1,-2,-3,-2,-1,0,1\right\}$那么$-1>-2$,中间的$\left\{-1,-1,1,1,1\right\}
Wizarderror
·
2019-09-06 22:00
leetcode之53.最大子序和
链接:https://leetcode-cn.com/problems/maximum-
subarray
题解动态规划:f(i)=max(f(i-1)+num[i],num[i
ManWingloeng
·
2019-09-03 17:00
Maximum
Subarray
Givenanintegerarraynums,findthecontiguoussubarray(containingatleastonenumber)whichhasthelargestsumandreturnitssum.Example:Input:[-2,1,-3,4,-1,2,1,-5,4],Output:6Explanation: [4,-1,2,1]hasthelargestsum=
琴影
·
2019-08-29 11:00
Maximum
Subarray
题目简单DPclassSolution{public:intdp[100005];intmaxSubArray(vector&nums){if(nums.size()==0)return0;intans=nums[0];dp[0]=nums[0];for(inti=1;i
Shendu.CC
·
2019-08-29 07:00
LeetCode--- Maximum
Subarray
、Unique Paths、Unique Paths II、Minimum Path Sum、Climbing Stairs
53.MaximumSubarrayGivenanintegerarraynums,findthecontiguoussubarray(containingatleastonenumber)whichhasthelargestsumandreturnitssum.Example:Input:[-2,1,-3,4,-1,2,1,-5,4],Output:6Explanation: [4,-1,2,1
slbyzdgz
·
2019-08-19 20:49
刷题练习
动态规划
leetcode_209 Minimum Size
Subarray
Sum
题目描述Givenanarrayofnpositiveintegersandapositiveintegers,findtheminimallengthofacontiguoussubarrayofwhichthesum≥s.Ifthereisn’tone,return0instead.Example:Input:s=7,nums=[2,3,1,2,4,3]Output:2Explanation:
lirt15
·
2019-08-18 19:12
leetcode
算法
leetcode
581 Shortest Unsorted Continuous
Subarray
Givenanintegerarray,youneedtofindonecontinuoussubarraythatifyouonlysortthissubarrayinascendingorder,thenthewholearraywillbesortedinascendingorder,too.Youneedtofindtheshortestsuchsubarrayandoutputitsle
烟雨醉尘缘
·
2019-08-14 17:20
581 Shortest Unsorted Continuous
Subarray
Givenanintegerarray,youneedtofindonecontinuoussubarraythatifyouonlysortthissubarrayinascendingorder,thenthewholearraywillbesortedinascendingorder,too.Youneedtofindtheshortestsuchsubarrayandoutputitsle
烟雨醉尘缘
·
2019-08-14 17:20
[LeetCode 152] Maximum Product
SubArray
(medium) DP
Givenanintegerarraynums,findthecontiguoussubarraywithinanarray(containingatleastonenumber)whichhasthelargestproduct.Example1:Input:[2,3,-2,4]Output:6Explanation:[2,3]hasthelargestproduct6.Example2:Inp
蓝眼睛灰
·
2019-08-07 15:05
[LeetCode 152] Maximum Product
SubArray
(medium) DP
Givenanintegerarraynums,findthecontiguoussubarraywithinanarray(containingatleastonenumber)whichhasthelargestproduct.Example1:Input:[2,3,-2,4]Output:6Explanation:[2,3]hasthelargestproduct6.Example2:Inp
蓝眼睛灰
·
2019-08-07 15:05
leetcode 152.Maximum Product
Subarray
( 乘积最大子序列)
题目要求给定一个整数数组nums,找出一个序列中乘积最大的连续子序列(该序列至少包含一个数)。解题思路和求连续最大子数组的和一样leetcode53MaximumSubarray(求最大子数组的和),用Kadanes的思想,(算是一种动态规划算法)它需要两个变量,一个用来存储局部最优值,一个用来比较全局最优值。唯一不同的是,在乘法运算中,可能会有负数和正数相乘的情况,原本这个正数是目前最大的元素,
小白的进阶之路
·
2019-08-05 19:37
leetcode题解
Shortest
Subarray
with Sum at Least K 和至少为K的最短子数组
Returnthelengthoftheshortest,non-empty,contiguoussubarrayofAwithsumatleastK.Ifthereisnonon-emptysubarraywithsumatleastK,return-1.Example1:Input:A=[1],K=1Output:1Example2:Input:A=[1,2],K=4Output:-1Exam
Grandyang
·
2019-08-04 22:00
Sum of
Subarray
Minimums 子数组最小值之和
GivenanarrayofintegersA,findthesumofmin(B),whereBrangesoverevery(contiguous)subarrayofA.Sincetheanswermaybelarge,returntheanswermodulo10^9+7.Example1:Input:[3,1,2,4]Output:17Explanation:Subarraysare[3
Grandyang
·
2019-07-30 22:00
Yet Another
Subarray
Problem(DP)
题目链接:题意:给一个长度为n和m,k的数组,的最大值。题解:考虑dp的做法,dp[i][j]代表以第i个数为右端点,长度减一求余m的值为j时的最大值。转移方程:dp[i][j]=dp[i-1][j-1]+a[i](j>0)dp[i][j]=max(dp[i-1][m-1]+a[i]-k,a[i]-k)(j==0)代码:#includeusingnamespacestd;typedeflonglo
Estretali
·
2019-07-23 17:00
leetcode152 Maximum Product
Subarray
求子数组的最大积.我一开始联想到的是子数组的最大和,动态规划经典题目,但是这道题好像不能用DP来解.我采用的是一种很直观的解法,求子数组最大积的时候,最特殊的就是0,0乘任何数都等于0.所以,假设有这样的一个数组1,4,-5,9,-3,-4,0,1,-4,9,7,-30把这个数组分成了两个子数组,则最大积就是这两个子数组最大积的最大值(大多数情况下是,暂时不考虑特殊边界条件).所以我们求两个子数组
LOVETEDA
·
2019-07-23 15:08
algorithm
Minimum Size
Subarray
Sum【滑动窗口】
Givenanarrayofnpositiveintegersandapositiveintegers,findtheminimallengthofacontiguoussubarrayofwhichthesum≥s.Ifthereisn'tone,return0instead.Example:Input:s=7,nums=[2,3,1,2,4,3]Output:2Explanation:thes
Roni_i
·
2019-07-21 20:00
Leetcode中和
Subarray
Sum相关的小结
虽然之前在SlidingWindow那篇小结里总结了一些关于subarraysum的题目,但总觉得还不够系统所以打算花更大的篇幅对leetcode中涉及到subarraysum的题目做一个小结。1.求subarraysum的最大值53MaximumSubarray:一道非常经典的dp题,这里就不作总结了2.求满足条件的subarraysum的个数560.SubarraySumEqualsK:求su
我想做个正常人
·
2019-07-13 00:00
leetcode
Shortest
Subarray
with Sum at Least K
Returnthelengthoftheshortest,non-empty,contiguoussubarrayofAwithsumatleastK.Ifthereisnonon-emptysubarraywithsumatleastK,return-1.Example1:Input:A=[1],K=1Output:1Example2:Input:A=[1,2],K=4Output:-1Exam
永远的EMT
·
2019-06-30 23:03
LeetCode
单调队列
LeetCode题解——978. 最长湍流子数组
https://leetcode-cn.com/problems/longest-turbulent-
subarray
/题目当A的子数组A[i],A[i+1],…,A[j]满足下列条件时,我们称其为湍流子数组
从程序猿到程序员
·
2019-06-22 10:44
LeetCode
最大连续子数组的和,python实现
#最大子数组的和defmaxsum_of_
subarray
(nums):#如果全负ifmax(nums)0:returnsum(nums)#当数组元素有正有负时current_sum=0greatest_sum
拿不到offer不改名字的sy
·
2019-06-09 15:18
python
数据结构
每天一个小程序(十二)--- max
SubArray
maxSubArrayOnlyMyRailgun前言:周六和老婆去爬山,山上好多杨梅中途差点放弃,后来还是爬到了山顶,感觉一周的不快都得到了释放~周天再次和小伙伴相约去了一个新的密室,千与千寻主题,难度其实有点稍低了,不过场景之类的还是很还原的,比上次体验好很多了,加上晚上的火锅,愉快的一天~packagearray;/***@authorBlackSugar*@date2019/4/16*Giv
Autumn_bell
·
2019-06-03 16:13
学习
java小程序
java
遇到的问题
LeetCode53、最大子序和
53、最大子序和文章目录53、最大子序和题目链接题目描述解题思路动态规划代码实现分治法代码实现注意总结题目链接https://leetcode-cn.com/problems/maximum-
subarray
code_AC
·
2019-05-29 11:40
dp
算法
LeetCode 674. 最长连续递增序列(Longest Continuous Increasing Subsequence) 18
Givenanunsortedarrayofintegers,findthelengthoflongestcontinuousincreasingsubsequence(
subarray
).每日一算法2019
weixin_30446613
·
2019-05-21 12:00
数据结构与算法
java
Leetcode刷题83-643. 子数组最大平均数 I(C++详细解法!!!)
Comefrom:[https://leetcode-cn.com/problems/maximum-average-
subarray
-i/]643.MaximumAverageSubarrayI1.Question2
胡云层呀
·
2019-05-20 21:03
LeetCode从零开始
LeetCode
C++
Maximum
Subarray
解法 python
一.问题描述Givenanintegerarraynums,findthecontiguoussubarray(containingatleastonenumber)whichhasthelargestsumandreturnitssum.Example:Input:[-2,1,-3,4,-1,2,1,-5,4],Output:6Explanation: [4,-1,2,1]hasthelarge
奋力翻身的咸鱼=_=
·
2019-05-19 23:47
leetcode
leetcode算法从零到结束
Maximum
Subarray
解法 python
一.问题描述Givenanintegerarraynums,findthecontiguoussubarray(containingatleastonenumber)whichhasthelargestsumandreturnitssum.Example:Input:[-2,1,-3,4,-1,2,1,-5,4],Output:6Explanation: [4,-1,2,1]hasthelarge
奋力翻身的咸鱼=_=
·
2019-05-19 23:47
leetcode
leetcode算法从零到结束
Leetcode Shortest
Subarray
with Sum at Least K(区间和大于k的最小区间)
Linkhttps://leetcode.com/problems/shortest-
subarray
-with-sum-at-least-k/DescriptionProblemStatement Returnthelengthoftheshortest
yug9u
·
2019-05-18 15:05
杂题
数据结构--单调队列
Longest Turbulent
Subarray
题目描述:AsubarrayA[i],A[i+1],...,A[j]ofAissaidtobeturbulentifandonlyif:ForiA[k+1]whenkisodd,andA[k]A[k+1]whenkiseven,andA[k]A[2]A[4]A[i-2]andA[i-1]>A[i])or(A[i-1]A[i-2]andA[i-1]>A[i])or(A[i-1]
牛奶芝麻
·
2019-05-10 09:11
vba遍历数组的两种方法
数组循环1
Subarray
_loop_demo()DimiAsInteger,array_narray_n=Array("A","B","C")i=0DoWhilei<=UBound(array_n)MsgBoxarray_n
tutu_tutu
·
2019-05-07 22:48
Maximum
Subarray
53.MaximumSubarray题目描述解题思路实现代码题目描述Givenanintegerarraynums,findthecontiguoussubarray(containingatleastonenumber)whichhasthelargestsumandreturnitssum.Example:Input:[-2,1,-3,4,-1,2,1,-5,4],Output:6Explan
IT Crowd
·
2019-04-27 22:42
LeetCode
动态规划
Diverse
Subarray
这题又是万恶的线段树maxx[j]存储的是l=xxx,r=j的时候的答案我们会让l从1到n的遍历中,查询线段树的[l,n]中最大的答案因为query的下界是n,所以单次查询复杂度是logn再其次这样做必须得再每次单元操作之后对线段树进行update#include#include#include#include#include#include#include#include#include#inc
basasuya
·
2019-04-21 21:00
Maximum Length of Repeated
Subarray
| 最短路径
1.最长公共子序列1.1介绍最长公共子序列的概念最长公共子串(LongestCommonSubstring)与最长公共子序列(LongestCommonSubsequence)的区别:子串要求在原字符串中是连续的,而子序列则只需保持相对顺序一致,并不要求连续。(1)例如X={a,Q,1,1};Y={a,1,1,d,f}那么,{a,1,1}是X和Y的最长公共子序列,但不是它们的最长公共字串。(2)S
Microstrong0305
·
2019-04-17 19:11
算法
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