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Subarray
最大子数组问题 Maximum
Subarray
MaximumSubarray标签(空格分隔):algorithm这个问题我们先看下问题的描述:问题描述Findthecontiguoussubarraywithinanarray(containingatleastonenumber)whichhasthelargestsum.Forexample,giventhearray[−2,1,−3,4,−1,2,1,−5,4],thecontiguou
LIUHUANUCAS
·
2020-07-02 08:10
algorithm
Minimum Size
Subarray
Sum 解题报告(Python & C++)
作者:负雪明烛id:fuxuemingzhu个人博客:http://fuxuemingzhu.cn/题目地址:https://leetcode.com/problems/minimum-size-
subarray
-sum
负雪明烛
·
2020-07-02 00:29
LeetCode
算法
LintCode-41(最大子数组)
关于lintcode系列,第41题,题目网址:https://www.lintcode.com/problem/maximum-
subarray
/description描述给定一个整数数组,找到一个具有最大和的子数组
tonasy
·
2020-07-01 23:14
LintCode
leetcode每日一题:718. 最长重复子数组
来源:力扣(LeetCode)链接:https://leetcode-cn.com/problems/maximum-length-of-repeated-
subarray
思路方法一:暴力法1
一学子
·
2020-07-01 21:27
leetcode刷题
动态规划
一文看懂《最大子序列和问题》(内含Java,Python,JS代码)
最大子序列和是一道经典的算法题,leetcode也有原题《53.maximum-sum-
subarray
》,今天我们就来彻底攻克它。
fe_lucifer
·
2020-07-01 17:25
和小于k的最长连续子串
/longest_
subarray
_with_sum_less_than_k'describeLongestSubdol
davidhuangdw
·
2020-07-01 14:34
Maximum Average
Subarray
II 最大平均区间2 解题报告
这道题目呢,和之前的643类型差不多,但是更难。首先这道题我看了Solution的解法,反正不是n2的复杂度,是n*log(max-min)的样子吧,一开始怎么做都不对,超时。。。直到直接跑了solution的代码(java),发现原因不是代码写错了,而是python特别慢!!!!所以不是大神就别用python了,所以我大概还是以Java为主吧。Givenanarrayconsistingofni
学术状态抽奖器
·
2020-07-01 11:33
leetcode-java
必考Contiguous Array [Map记录index]!
感觉两个Forloop表示
subarray
的方法在我脑袋里仿佛完全不存在一样。。。这个O(N)的算法就非常恐怖了。。。
98Future
·
2020-07-01 05:29
【LeetCode】209. 长度最小的子数组
题目链接:https://leetcode-cn.com/problems/minimum-size-
subarray
-sum/description/题目描述给定一个含有n个正整数的数组和一个正整数s
fuqiuai
·
2020-07-01 02:55
LeetCode
Maximum
Subarray
(最大子序和)(一维dp)
LeetCode-53.MaximumSubarray(最大子序和)(一维dp)递归写法一维dp数组滚动优化分治解法Hdu-1003.MaxSum题目链接题目递归写法我们可以从数组的最后开始往前看,对于当前数nums[i],以这个nums[i]结尾的最大值一定是你前面的所有数求出一个最大的子序和(但是由于是子数组,所以必须是判断前一个数)+我自己(nums[i]),所以这是一个递归的过程,边界条件
zxzxin
·
2020-06-30 20:09
动态规划DP
LeetCode
Maximum Product
Subarray
题目:Givenanintegerarraynums,findthecontiguoussubarraywithinanarray(containingatleastonenumber)whichhasthelargestproduct.思路:笨办法,双重for循环,把所有可能性都试一遍,但是超时了,提交结果为184/184testcasespassed,buttooktoolong.。然后学习了
zxc120389574
·
2020-06-30 20:47
LeetCode
【leetcode】152 乘积最大子序列(数组)
题目链接:https://leetcode-cn.com/problems/maximum-product-
subarray
/题目描述给定一个整数数组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
zjwreal
·
2020-06-30 18:35
LeetCode
【leetcode】713 乘积小于K的子数组(数组,双指针)
题目链接:https://leetcode-cn.com/problems/
subarray
-product-less-than-k/题目描述给定一个正整数数组nums。
zjwreal
·
2020-06-30 18:34
LeetCode
Maximum
Subarray
时间复杂度(O(n))
时间复杂度(O(n)),思想:动态更新(小于0则抛弃以前更新,大于零则累加)classSolution:defmaxSubArray(self,nums:List[int])->int:max_sum,path_sum=float('-inf'),float('-inf')fornuminnums:ifpath_sum<=0:path_sum=numelse:path_sum+=numifmax_
ziyue246
·
2020-06-30 18:14
LeetCode
Maximum
subarray
sum(求最大的子数组求和)
例如maxSequence([-2,1,-3,4,-1,2,1,-5,4])#shouldbe6:[4,-1,2,1]按照一般思想,代码如下defmaxSequence(arr):max=0foriinrange(len(arr)):forninrange(i+1,len(arr)+1):s=sum(arr[i:n])printarr[i:n]if(s>max):max=sreturnmax但是有
Keyu_
·
2020-06-30 17:49
算法
Subarray
Sum Equals K
1这种题有一个共同的特性就是,会有很多个
subarray
,但是对应的targetvalue只有k一个,所以可以想着用hashmap来做,即k是key,
subarray
的数目是对应的value2当我们遍历数组中的数字时
云端漫步_b5aa
·
2020-06-30 08:50
Lintcode43 Maximum
Subarray
III solution 题解
【题目描述】Givenanarrayofintegersandanumberk,findknon-overlappingsubarrayswhichhavethelargestsum.Thenumberineachsubarrayshouldbecontiguous.Returnthelargestsum.Notice:Thesubarrayshouldcontainatleastonenumbe
xuxu_ban
·
2020-06-30 04:45
LintCode 45 [Maximum
Subarray
Difference]
原题给定一个整数数组,找出两个不重叠的子数组A和B,使两个子数组和的差的绝对值|SUM(A)-SUM(B)|最大。返回这个最大的差值。给出数组[1,2,-3,1],返回6子数组最少包含一个数解题思路类似题[MaximumSubarrayII]枚举分割线,但本题每次要知道分割线左边和右边的最大/最小数组和枚举一遍分割线,求max(abs(左最大-右最小),abs(左最小-右最大))完整代码class
Jason_Yuan
·
2020-06-30 04:06
leetcode 152: Maximum Product
Subarray
MaximumProductSubarrayTotalAccepted:16617TotalSubmissions:96901Findthecontiguoussubarraywithinanarray(containingatleastonenumber)whichhasthelargestproduct.Forexample,giventhearray[2,3,-2,4],thecontigu
xudli
·
2020-06-30 03:33
leetcode
Leetcode之Maximum Average
Subarray
I
问题描述:Givenanarrayconsistingofnintegers,findthecontiguoussubarrayofgivenlengthkthathasthemaximumaveragevalue.Andyouneedtooutputthemaximumaveragevalue.示例:Input:[1,12,-5,-6,50,3],k=4Output:12.75Explanati
xu2645318400
·
2020-06-30 03:26
leetcode
java
leetcode
面试
算法
LintCode解题笔记 - 连续子数组求和
原题地址:http://www.lintcode.com/zh-cn/problem/continuous-
subarray
-sum/给定一个整数数组,请找出一个连续子数组,使得该子数组的和最大。
xiewenjiang110
·
2020-06-30 01:48
[LeetCode] Maximum
Subarray
求连续子数组的最大和
声明:原题目转载自LeetCode,解答部分为原创Problem:Findthecontiguoussubarraywithinanarray(containingatleastonenumber)whichhasthelargestsum.Forexample,giventhearray[-2,1,-3,4,-1,2,1,-5,4],thecontiguoussubarray[4,-1,2,1]
xblog_
·
2020-06-29 23:07
LeetCode
LeetCode Maximum Product
Subarray
(最大子数组乘积)
Findthecontiguoussubarraywithinanarray(containingatleastonenumber)whichhasthelargestproduct.Forexample,giventhearray[2,3,-2,4],thecontiguoussubarray[2,3]hasthelargestproduct=6.题意:给出一个数组,求其最大子数组的乘积思路
kgduu
·
2020-06-29 21:35
#
LeetCode Maximum Product
Subarray
解题报告
https://oj.leetcode.com/problems/maximum-product-
subarray
/题目分析:求一个数组,连续子数组的最大乘积。
tanglu2004
·
2020-06-29 20:14
LeetCode
算法
面试题
Java
LeetCode解题报告
[刷题]Maximum
Subarray
III
[LintCode]MaximumSubarrayIIIpublicclassSolution{ /** *@paramnums:Alistofintegers *@paramk:Anintegerdenotetofindknon-overlappingsubarrays *@return:Anintegerdenotethesumofmaxknon-overlappingsubar
yoohoosome
·
2020-06-29 18:54
high
frequency
LeetCode 152. 乘积最大子数组 | Python
文章目录152.乘积最大子数组题目解题思路代码实现实现结果152.乘积最大子数组题目来源:https://leetcode-cn.com/problems/maximum-product-
subarray
"大梦三千秋
·
2020-06-29 16:35
LeetCode
LeetCode.152 - Maximum product
subarray
Leetcode.152https://leetcode.com/problems/maximum-product-
subarray
/defsolve_max_product(A):m=A.copy()
darkchii
·
2020-06-29 16:00
每日一题 Day3--leetcode53--最大子序和
每日一题Day3–leetcode53–最大子序和题目链接:https://leetcode-cn.com/problems/maximum-
subarray
/链接为leetcode中文社区,题目没有区别
小问号的朋友
·
2020-06-29 11:50
每日一题leetcode
LintCode43:Maximum
Subarray
III(求能得到最大和的分组,输出最大和)
动态规划比较难想,但写出来的代码确实简洁,而且处理的逻辑很清晰,不过动态规划很多时候并不是最优解,这里只作为一种理解和示意publicclassMaxSubArray{publicstaticintmaxSubArray(int[]nums,intk){//动态规划最重要的就是找到递推关系//递推的目标是遍历处理完所有元素,处理下一个元素时能够利用到之前的结果,最终得出结果//这里我们需要找的是把
初心江湖路
·
2020-06-29 10:51
算法
Maximum
Subarray
(动态规划经典题)
Givenanintegerarraynums,findthecontiguoussubarray(containingatleastonenumber)whichhasthelargestsumandreturnitssum.Example:Input:[-2,1,-3,4,-1,2,1,-5,4],Output:6Explanation:[4,-1,2,1]hasthelargestsum=6
weixin_42741175
·
2020-06-29 06:40
LeetCode
动态规划
LeetCode 209. 长度最小的子数组 | Python
209.长度最小的子数组题目来源:力扣(LeetCode)https://leetcode-cn.com/problems/minimum-size-
subarray
-sum题目给定一个含有n个正整数的数组和一个正整数
大梦三千秋
·
2020-06-29 04:21
python
leetcode
算法
必考之累加和问题/Maximum Size
Subarray
Sum Equals k
这类
subarray
,continuoussubarray的套路就是必须以每个位置结尾的情况下解subproblem例:必须以0位置结尾情况下的最长。。。必须以1位置结尾的最长。。
98Future
·
2020-06-28 23:30
LeetCode 209. 长度最小的子数组 | Python
.长度最小的子数组题目解题思路代码实现实现结果总结209.长度最小的子数组题目来源:力扣(LeetCode)https://leetcode-cn.com/problems/minimum-size-
subarray
-sum
"大梦三千秋
·
2020-06-28 20:12
LeetCode
leetcode
算法
双指针
python
长度最小的子数组
Subarray
Sum Closet
Givenanintegerarray,findasubarraywithsumclosesttozero.Returntheindexesofthefirstnumberandlastnumber.Given[-3,1,1,-3,5],return[0,2],[1,3],[1,1],[2,2]or[0,4].这题求和最接近0的子数组,属于SubarraySum的followup.思路也很近似,每
weixin_34380781
·
2020-06-28 18:20
Subarray
Sum
给定一个整数数组,找到和为零的子数组。你的代码应该返回满足要求的子数组的起始位置和结束位置。比如给出[-3,1,2,-3,4],返回[0,2]或者[1,3].Lintcode上的一道题目,这一题我开始想到的是bruteforce的方法,求出所有子数组,并判断和是否为0。子数组一共有n*(n-1)/2个,如果每次再求和,则复杂度为O(n^3),于是想到使用DP缓存中间结果,不过无论用一维数组还是二维
weixin_34380296
·
2020-06-28 18:44
LeetCode-53 最大子序和
动态规划分治题目https://leetcode-cn.com/problems/maximum-
subarray
/给定一个整数数组nums,找到一个具有最大和的连续子数组(子数组最少包含一个元素),返回其最大和
FlyCharles
·
2020-06-28 16:28
Continuous
Subarray
Sum
Givenanintegerarray,findacontinuoussubarraywherethesumofnumbersisthebiggest.Yourcodeshouldreturntheindexofthefirstnumberandtheindexofthelastnumber.(Iftheirareduplicateanswer,returnanyone)和MaximumSubar
weixin_34226182
·
2020-06-28 14:36
Maximum
Subarray
Findthecontiguoussubarraywithinanarray(containingatleastonenumber)whichhasthelargestsum.Forexample,giventhearray[−2,1,−3,4,−1,2,1,−5,4],thecontiguoussubarray[4,−1,2,1]hasthelargestsum=6.这个一道非常经典的题目,剑指
weixin_34177064
·
2020-06-28 12:13
LeetCode 53 Maximum
Subarray
最大子数组
DescriptionGivenanintegerarraynums,findthecontiguoussubarray(containingatleastonenumber)whichhasthelargestsumandreturnitssum.Example:Input:[-2,1,-3,4,-1,2,1,-5,4],Output:6Explanation:[4,-1,2,1]hasthel
weixin_34018202
·
2020-06-28 09:38
Maximum
Subarray
II
Givenanarrayofintegers,findtwonon-overlappingsubarrayswhichhavethelargestsum.Thenumberineachsubarrayshouldbecontiguous.Returnthelargestsum.NoticeThesubarrayshouldcontainatleastonenumberForgiven[1,3,-1
weixin_33924770
·
2020-06-28 08:38
Continuous
Subarray
Sum II
Givenancircularintegerarray(thenextelementofthelastelementisthefirstelement),findacontinuoussubarrayinit,wherethesumofnumbersisthebiggest.Yourcodeshouldreturntheindexofthefirstnumberandtheindexofthela
weixin_33859844
·
2020-06-28 06:53
Maximum Product
Subarray
whichhasthelargestproduct.Forexample,giventhearray[2,3,-2,4],thecontiguoussubarray[2,3]hasthelargestproduct=6.总结来说对于
subarray
weixin_33819479
·
2020-06-28 06:50
Continuous
Subarray
Sum
Givenalistofnon-negativenumbersandatargetintegerk,writeafunctiontocheckifthearrayhasacontinuoussubarrayofsizeatleast2thatsumsuptothemultipleofk,thatis,sumsupton*kwherenisalsoaninteger.Example1:Input:[
weixin_33805557
·
2020-06-28 05:24
leetcode53 Maximum
Subarray
最大连续子数组
题目要求Findthecontiguoussubarraywithinanarray(containingatleastonenumber)whichhasthelargestsum.Forexample,giventhearray[-2,1,-3,4,-1,2,1,-5,4],thecontiguoussubarray[4,-1,2,1]hasthelargestsum=6.即:寻找数列中的一个
weixin_33730836
·
2020-06-28 04:31
Maximum
Subarray
(动态规划)
Findthecontiguoussubarraywithinanarray(containingatleastonenumber)whichhasthelargestsum.Forexample,giventhearray[-2,1,-3,4,-1,2,1,-5,4],thecontiguoussubarray[4,-1,2,1]hasthelargestsum=6.分析:创建了dp数组,dp[
weixin_30872337
·
2020-06-28 01:03
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
weixin_30699235
·
2020-06-27 23:42
Maximum
Subarray
最大子数组
Givenanintegerarraynums,findthecontiguoussubarray(containingatleastonenumber)whichhasthelargestsumandreturnitssum.Example:Input:[-2,1,-3,4,-1,2,1,-5,4],Output:6Explanation: [4,-1,2,1]hasthelargestsum=
weixin_30682127
·
2020-06-27 23:49
Maximum
Subarray
题意是求最大子序列和input:[−2,1,−3,4,−1,2,1,−5,4]ans:6[4,−1,2,1]下面给出三种不同时间复杂度的解法。一.O(N^2)两个point,一个指向子序列的头,一个指向子序列的尾,两层循环求该子序列的和。publicclassSolution{publicintmaxSubArray(int[]nums){intmax=nums[0];for(inti=0;ima
weixin_30376509
·
2020-06-27 18:50
Maximum Product
Subarray
leetcode152.MaximumProductSubarrayFindthecontiguoussubarraywithinanarray(containingatleastonenumber)whichhasthelargestproduct.Forexample,giventhearray[2,3,-2,4],thecontiguoussubarray[2,3]hasthelargest
weixin_30362801
·
2020-06-27 18:41
Maximum
Subarray
//remmeberthebeginandtheend//returnthearrayclassSolution{public:intmaxSubArray(vector&nums){intsum=0;intmax=0;intcount=nums.size();for(inti=0;i0){max=max>sum?max:sum;}else{max=sum;sum=0;}}returnmax;}}
followyounger1
·
2020-06-27 15:35
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