Subarrays

number-of-subarrays-with-bounded-maximum 最大值在界内的子数组个数

给定一个包含正整数的数组A,以及两个正整数L和R(Lr跳出循环，如果a[j]>==lresult++,整体思想有点dp的感觉思路2O(N)、遍历数组，记录下符合位置的索引index，和不符合位置的索引temp，result+=index-temppublicclassSolution{/***@parama:anarray*@paraml:aninteger*@paramr:aninteger*@
龙潭吴彦祖丶·2019-07-19 14:22

LeetCode 1031: Maximum sum of two non-overlapping subarrays

原题目GivenanarrayAofnon-negativeintegers,returnthemaximumsumofelementsintwonon-overlapping(contiguous)subarrays
Yuqi喵·2019-06-20 18:19

Bitwise ORs of Subarrays 子数组按位或操作

WehaveanarrayAofnon-negativeintegers.Forevery(contiguous)subarrayB=[A[i],A[i+1],...,A[j]](withi&A){unordered_setres,cur;for(inti:A){unordered_settmp={i};for(intj:cur)tmp.insert(i|j);cur=tmp;for(intj:c
Grandyang·2019-06-05 23:00

gym-101532A - Subarrays Beauty（按位算贡献+尺取）

题目给一个序列a[]，每个子区间都要把所有元素相与（and）之后得到一个值v，求所有v的和思路来源https://blog.csdn.net/lifelikes/article/details/78174268题解就是算每一位的贡献，先按二进制压位这样对于某一位来说，就变成了01序列1110111对于左边的三个1，其贡献为[1,1],[1,2][1,3][2,2][2,3][3,3]，共6个区间即
Code92007·2019-02-08 15:59

AtCoder-Dwango Programming Contest V-B - Sum AND Subarrays

地址：https://dwacon5th-prelims.contest.atcoder.jp/tasks/dwacon5th_prelims_b思路：贪心，首先将n*(n-1)/2个数求出来，在从高位开始遍历，若当前位为1的个数>=k，则将当前位为0的全部删除掉，同时ans加上当前位的值。Code:#include#includeusingnamespacestd;typedeflonglong
z岁月无声·2018-12-01 01:23

Maximum Sum of 3 Non-Overlapping Subarrays

ProblemInagivenarraynumsofpositiveintegers,findthreenon-overlappingsubarrayswithmaximumsum.Eachsubarraywillbeofsizek,andwewanttomaximizethesumofall3*kentries.Returntheresultasalistofindicesrepresentin
linspiration·2018-10-24 00:00

Gym - 101532A Subarrays Beauty（位操作找规律）

Youaregivenanarrayaconsistingofnintegers.Asubarray(l, r)fromarrayaisdefinedasnon-emptysequenceofconsecutiveelementsal, al + 1, …, ar.Thebeautyofasubarray(l, r)iscalculatedasthebitwiseANDforallelements
Cymbals·2018-03-19 21:18

Maximum Sum of 3 Non-Overlapping Subarrays

Inagivenarraynumsofpositiveintegers,findthreenon-overlappingsubarrayswithmaximumsum.Eachsubarraywillbeofsizek,andwewanttomaximizethesumofall3*kentries.Returntheresultasalistofindicesrepresentingthesta
Jeanz·2018-03-13 03:28

Codeforces 665E Beautiful Subarrays （01字典树）

题目传送门：http://codeforces.com/contest/665/problem/E给你长度n的数组，然后问你有多少个区间，区间异或和大于等于k区间异或和，一看就是01字典树，然后就是在01字典树上如何判断大于等于k咯，可以把k也每一位是0是1讨论，并且每个节点上记录放进去了多少个前缀，查询的时候就是当前查询的位数上是0是1和k这一位上是0是1分类讨论即可代码：#include #i
Miracle_ma·2016-05-24 13:00

Codeforces 655E Beautiful Subarrays【01trie树】

题目链接：http://codeforces.com/contest/665/problem/E题意：求异或值大于给定K的区间个数。分析：首先我们可以得到区间前缀的异或值。这样我们将这个前缀M和K一起走trie树，如果该位K的值为0，那么无论怎么走最后得到的答案都不会比K小，所以直接加上另一边的子树大小，然后继续沿着当前边走。如果该位K的值为1，那么想要大于等于K必须沿着另一边贪心的走。代码：#i
Yukizzz·2016-05-09 10:00

Beautiful Subarrays【字典树】

/************************************************Author:MaltubEmail:[email protected]:htttp://www.xiang578.top*************************************************/ #include #include #include #inc
xinag578·2016-04-30 09:00

Beautiful Subarrays

维护一个异或的前缀数组sum()，并把数组中的数挂在字典树上，寻找在sum(0)..sum(i-1)中和sum(i)异或值大于等于K的数的数目.累加#include #definemaxn205 #defineINF1e9 usingnamespacestd; typedeflonglongll; typedefstructNode{ intnum; Node*p[2]; }*T; Troot;
qq_26122039·2016-04-24 19:00

Beautiful Subarrays

题意：问有多少个连续区间异或和大于等于k思路：sum[l,r]=sum[1,l-1]^sum[1,r]所以记录异或前缀和，并用字典树维护从高位开始插入，num维护有多少数的前缀等于插入路径的，只要高位异或大于等于k，则之后肯定满足；否则，必须将cur的那一位置为1，然后继续。（因为退役已久，写了一发样例都没过，于是改着改着就改成codeforces的tutorial的样子，最后发现是我从低位开始插
u013007900·2016-04-23 15:00

CodeForces 665E Beautiful Subarrays

题意：问你有多少个区间，异或起来大于等于k思路：显然求个前缀和之后，就等于有多少对数异或起来大于等于k了，每次暴力爬字典树就好了，当k这一位等于0的时候，我们可以直接加上另外一边1的子树大小，因为爬那边之后，我怎么爬都是大于等于k的#include usingnamespacestd; constintmaxn=2e7+6; structTri { intch[maxn][2]; intsz[ma
qq_21057881·2016-04-23 00:00

Beautiful Subarrays 字典树

E.BeautifulSubarrays题目连接：http://www.codeforces.com/contest/665/problem/EDescriptionOneday,ZStheCoderwrotedownanarrayofintegersa withelementsa1,  a2,  ...,  an.Asubarrayofthearrayaisasequenceal,  al  +
qscqesze·2016-04-21 22:00

partition list - Groovy built-in to split an array into equal sized subarrays? - Stack Overflow

list - Groovy built-in to split an array into equal sized subarrays?
·2015-11-13 21:59

Data Structure Array: Maximum of all subarrays of size k

http://www.geeksforgeeks.org/maximum-of-all-subarrays-of-size-k/ 1 #include <iostream> 2 #
·2015-11-13 10:50

Lintcode: Maximum Subarray III

Given an array of integers and a number k, find k non-overlapping subarrays which have the largest sum
·2015-11-11 01:10

Lintcode: Maximum Subarray II

Given an array of integers, find two non-overlapping subarrays which have the largest sum.
·2015-11-11 01:08

Lintcode: Maximum Subarray Difference

Find two non-overlapping subarrays A and B, which |SUM(A) - SUM(B)| is the largest.
·2015-11-11 01:07

[LintCode] Maximum Subarray Difference

Find two non-overlapping subarrays A and B, which |SUM(A) - SUM(B)| is the largest
·2015-10-27 15:32

[LintCode] Maximum Subarray III

Maximum Subarray III Given an array of integers and a number k, find knon-overlapping subarrays
·2015-10-27 15:30

所有子序列的最大值 Maximum of all subarrays of size k

给定一个数组和一个整数k，找到每一个长度为k的子序列的最大值。例如：Input:arr[]={1,2,3,1,4,5,2,3,6}k=3Output:3345556Input:arr[]={8,5,10,7,9,4,15,12,90,13}k=4Output:10101015159090#include #include usingnamespacestd; //ADequeue(Double
jiyanfeng1·2014-11-24 05:00
上一页 1 2 3 下一页
按字母分类： ABCDEFGHIJKLMNOPQRSTUVWXYZ其他