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4Sum
18.
4Sum
(python)
GivenanarraySofnintegers,arethereelementsa,b,c,anddinSsuchthata+b+c+d=target?Findalluniquequadrupletsinthearraywhichgivesthesumoftarget.Note:Thesolutionsetmustnotcontainduplicatequadruplets.Forexample
Rachel-chen
·
2016-10-30 16:56
leetcode
算法总结(3)--k-Sum求和,找到和为定值的多个数
2Sum,3Sum,
4Sum
,…,nSum这类问题主要用到了hashmap结构,二分法思路,前后指针等需要将2Sum问题的几种方法,算法时间和空间复杂度深刻理解,并能手写出代码来1.TwoSum题目地址
master-dragon
·
2016-10-11 13:12
LeetCode
leetcode算法总结
Leetcode
4sum
//Author:yqtao //Date:2016.6.17 //Email:yqtao@whu.edu.cn /************************************************************************************GivenanarraySofnintegers,arethereelementsa,b,c,anddinSsuch
taoyanqi8932
·
2016-06-17 21:00
LeetCode
LeetCode:
4Sum
4SumTotalAccepted: 75786 TotalSubmissions: 314216 Difficulty: MediumGivenanarray S of n integers,arethereelements a, b, c,and d in S suchthat a + b + c + d =target?Findalluniquequadrupletsinthearraywh
itismelzp
·
2016-06-15 19:00
LeetCode
array
table
hash
Two
Pointers
【Leetcode】
4Sum
题目链接:https://leetcode.com/problems/
4sum
/题目:Givenanarray S of n integers,arethereelements a, b, c,and
yeqiuzs
·
2016-06-10 20:00
Middle-题目100:18.
4Sum
题目原文:GivenanarraySofnintegers,arethereelementsa,b,c,anddinSsuchthata+b+c+d=target?Findalluniquequadrupletsinthearraywhichgivesthesumoftarget.Note:Elementsinaquadruplet(a,b,c,d)mustbeinnon-descendingor
cmershen
·
2016-05-31 19:00
4Sum
题目描述:GivenanarraySofnintegers,arethereelementsa,b,c,anddinSsuchthata+b+c+d=target?Findalluniquequadrupletsinthearraywhichgivesthesumoftarget.Note:Elementsinaquadruplet(a,b,c,d)mustbeinnon-descendingor
yeshiwu
·
2016-05-24 22:00
java
LeetCode
leetcode_c++:
4sum
(016)
GivenanarraySofnintegers,arethereelementsa,b,c,anddinSsuchthata+b+c+d=target?Findalluniquequadrupletsinthearraywhichgivesthesumoftarget.Note:Elementsinaquadruplet(a,b,c,d)mustbeinnon-descendingorder.(
mijian1207mijian
·
2016-05-11 14:00
Leetcode 18.
4Sum
Givenanarray S of n integers,arethereelements a, b, c,and d in S suchthat a + b + c + d =target?Findalluniquequadrupletsinthearraywhichgivesthesumoftarget.Note:Elementsinaquadruplet(a,b,c,d)mustbeinno
a2415180498
·
2016-05-07 13:00
LeetCode
C++
4sum
双指针
leetcode 18.
4Sum
——better way
importjava.util.ArrayList; importjava.util.Arrays; importjava.util.HashSet; importjava.util.List; //GivenanarraySofnintegers,arethereelementsa,b,c,anddinSsuchthata+b+c+d=target? //Findalluniquequadru
u011438605
·
2016-05-06 10:00
java
LeetCode
leetcode 18.
4Sum
importjava.util.ArrayList; importjava.util.Arrays; importjava.util.List; //GivenanarraySofnintegers,arethereelementsa,b,c,anddinSsuchthata+b+c+d=target? //Findalluniquequadrupletsinthearraywhichgives
u011438605
·
2016-05-05 17:00
java
LeetCode
【LeetCode】LeetCode——第18题:
4Sum
18.4Sum MySubmissionsQuestionEditorialSolutionTotalAccepted: 71353 TotalSubmissions: 300185 Difficulty: MediumGivenanarray S of n integers,arethereelements a, b, c,and d in S suchthat a + b + c + d
hujingshuang
·
2016-05-03 09:00
LeetCode
4sum
18.
4Sum
Givenanarray S of n integers,arethereelements a, b, c,and d in S suchthat a + b + c + d =target?Findalluniquequadrupletsinthearraywhichgivesthesumoftarget.Note:Elementsinaquadruplet(a,b,c,d)mustbeinno
qq_27991659
·
2016-04-28 15:00
leetcode :
4Sum
[M]
018.4Sum问题GivenanarraySofnintegers,arethereelementsa,b,c,anddinSsuchthata+b+c+d=target?Findalluniquequadrupletsinthearraywhichgivesthesumoftarget.Note:Elementsinaquadruplet(a,b,c,d)mustbeinnon-descend
hk2291976
·
2016-04-27 21:00
LeetCode
2sum/3sum/ksum 问题
网址:http://www.sigmainfy.com/blog/summary-of-ksum-problems.htmlSummaryforLeetCode2Sum,3Sum,
4Sum
,KSumOverviewIsummarizevarioussolutions
guilanl
·
2016-04-25 16:00
LeetCode[Array]----
4Sum
4SumGivenanarray S of n integers,arethereelements a, b, c,and d in S suchthat a + b + c + d =target?Findalluniquequadrupletsinthearraywhichgivesthesumoftarget.Note:Elementsinaquadruplet(a,b,c,d)mustb
whiterbear
·
2016-04-19 11:00
LeetCode
python
【一天一道LeetCode】#18.
4Sum
一天一道LeetCode(一)题目GivenanarraySofnintegers,arethereelementsa,b,c,anddinSsuchthata+b+c+d=target?Findalluniquequadrupletsinthearraywhichgivesthesumoftarget.Note:Elementsinaquadruplet(a,b,c,d)mustbeinnon-
terence1212
·
2016-04-15 21:00
LeetCode
leetcode——18——
4Sum
GivenanarraySofnintegers,arethereelementsa,b,c,anddinSsuchthata+b+c+d=target?Findalluniquequadrupletsinthearraywhichgivesthesumoftarget.Note:Elementsinaquadruplet(a,b,c,d)mustbeinnon-descendingorder.(
happyxuma1991
·
2016-04-13 21:00
LeetCode
算法题
LeetCode 18
4Sum
18.4SumTotalAccepted:68829TotalSubmissions:291751Difficulty:MediumGivenanarraySofnintegers,arethereelementsa,b,c,anddinSsuchthata+b+c+d=target?Findalluniquequadrupletsinthearraywhichgivesthesumoftarge
lizhaowei213
·
2016-04-09 13:00
LeetCodet题解--18.
4Sum
(4个数的和)
链接LeetCode题目:https://leetcode.com/problems/4sumGitHub代码:https://github.com/gatieme/LeetCode/tree/master/018-4SumCSDN题解:http://blog.csdn.net/gatieme/article/details/51089460题意GivenanarraySofnintegers,a
gatieme
·
2016-04-07 21:00
LeetCode
github
算法
面试
求和
【LeetCode】18.
4Sum
18.4SumTotalAccepted: 68944 TotalSubmissions: 292188 Difficulty: MediumGivenanarray S of n integers,arethereelements a, b, c,and d in S suchthat a + b + c + d =target?Findalluniquequadrupletsinthearra
Jin_Kwok
·
2016-03-30 21:00
LeetCode
C++
排序
C语言
sort
【LeetCode】18.
4Sum
18.4SumTotalAccepted: 68944 TotalSubmissions: 292188 Difficulty: MediumGivenanarray S of n integers,arethereelements a, b, c,and d in S suchthat a + b + c + d =target?Findalluniquequadrupletsinthearra
Jin_Kwok
·
2016-03-30 21:00
LeetCode
C++
排序
C语言
sort
leetcode:
4Sum
问题描述:Givenanarray S of n integers,arethereelements a, b, c,and d in S suchthat a + b + c + d =target?Findalluniquequadrupletsinthearraywhichgivesthesumoftarget.Note:Elementsinaquadruplet(a,b,c,d)mustb
frank-liu
·
2016-03-24 19:41
18.
4Sum
| Java最短代码实现
原题链接:18.4Sum【思路】本题考查动态规划。如果四次循环时间复杂度为O(n4),先排序O(nlogn),实现复杂度为O(n3)。具体实现是需要4个指针i,j,left,right,先固定i、j,然后用2sum得方法寻找到left和right,假设sum=nums[i]+nums[j]+nums]left]+nums[right]。由于数组是有序的,如果sum=target,那么left右移,
happyaaaaaaaaaaa
·
2016-03-21 00:00
java
LeetCode
Leetcode #18
4Sum
四数之和 解题小节+K-Sum思想
1题目理解Leetcode不少题目是成一个体系的,这道题是找四数之和等于四数之和的题,之前还有2Sum和3Sum,我也已经做了题目的小节,可以点开进行查看。Leetcode#153Sum三数之和解题小节Leetcode#1TwoSum解题小结和之前的问题一样,有如下的限制:1、最终输出的顺序是非降序的(所以我们首先需要排序)2、不能输出重复的解(所以我们要注意移动)这道题的解法,从最终的运行时间,
MebiuW
·
2016-03-20 20:00
LeetCode
4sum
k-sum
Ksum
LeetCode –
4Sum
(Java)题解
GivenanarraySofnintegers,arethereelementsa,b,c,anddinSsuchthata+b+c+d=target?Findalluniquequadrupletsinthearraywhichgivesthesumoftarget.Note:Elementsinaquadruplet(a,b,c,d)mustbeinnon-descendingorder.(
Ying_Xu
·
2016-03-20 17:00
LeetCode
leetcode 18.
4Sum
Givenanarray S of n integers,arethereelements a, b, c,and d in S suchthat a + b + c + d =target?Findalluniquequadrupletsinthearraywhichgivesthesumoftarget.Note:Elementsinaquadruplet(a,b,c,d)mustbeinno
u014568921
·
2016-03-18 15:00
LeetCode
Leetcode #15 3Sum 三数之和 解题小节
解题方式:之前有2SUM问题2SUM解题报告,这回的做法其实也差不多(或许对于K-SUM都是,因为似乎leetcode还有
4sum
问题)1、首先就是排序了,毕竟排序后方便找,也符合题目给的不降序的输出2
MebiuW
·
2016-03-17 23:04
leetcode
2sum
3sum
4sum
ksum
leetcode-java
Leetcode #15 3Sum 三数之和 解题小节
解题方式:之前有2SUM问题2SUM解题报告,这回的做法其实也差不多(或许对于K-SUM都是,因为似乎leetcode还有
4sum
问题)1、首先就是排序了,毕竟排序后方便找,也符合题目给的不降序的输出2
MebiuW
·
2016-03-17 23:00
LeetCode
4sum
3Sum
2Sum
Ksum
leetcode
4Sum
题目链接publicclassSolution{ publicList>fourSum(int[]nums,inttarget){ List>result=newLinkedList>(); Arrays.sort(nums); intlast=Integer.MAX_VALUE; for(inti=0;i>tempRow=fun(nums,findSum,j+1,nums.length-1);
bleuesprit
·
2016-03-11 10:00
4Sum
注意当有四个时,其实第一个和第二个性质等于三个数和时的第一个。classSolution{ public: vector>fourSum(vector&nums,inttarget){ vector>res; inti,j,k,l; if(nums.size()0&&nums[i]==nums[i-1])continue; for(j=i+1;ji+1&&nums[j]==nums[j
RenewDo
·
2016-03-01 22:00
18.
4Sum
Givenanarray S of n integers,arethereelements a, b, c,and d in S suchthat a + b + c + d =target?Findalluniquequadrupletsinthearraywhichgivesthesumoftarget.Note:Elementsinaquadruplet(a,b,c,d)mustbeinno
ArgenBarbie
·
2016-02-28 11:00
18.
4Sum
Givenanarray S of n integers,arethereelements a, b, c,and d in S suchthat a + b + c + d =target?Findalluniquequadrupletsinthearraywhichgivesthesumoftarget.Note:Elementsinaquadruplet(a,b,c,d)mustbeinno
水果拼盘武士G
·
2016-02-25 23:00
4Sum
importjava.util.ArrayList;importjava.util.Arrays;importjava.util.List;/** * *@authorzhiyongwang *title:
4Sum
wzyxidian
·
2016-02-19 23:00
LeetCode - 18.
4Sum
18.4SumProblem'sLink ----------------------------------------------------------------------------Mean: 给定一个数列和一个目标数,找出所有和为目标数的四元组.analyse:和3Sum差不多,多加了一个循环而已.Timecomplexity:O(N^3) viewcode/***--------
crazyacking
·
2016-02-17 13:00
leetcode第18题——**
4Sum
题目GivenanarraySofnintegers,arethereelementsa,b,c,anddinSsuchthata+b+c+d=target?Findalluniquequadrupletsinthearraywhichgivesthesumoftarget.Note:Elementsinaquadruplet(a,b,c,d)mustbeinnon-descendingorder
buptlrw
·
2016-01-23 00:00
java
LeetCode
python
LeetCode18.
4Sum
Givenanarray S of n integers,arethereelements a, b, c,and d in S suchthat a + b + c + d =target?Findalluniquequadrupletsinthearraywhichgivesthesumoftarget.Note:Elementsinaquadruplet(a,b,c,d)mustbeinno
booirror
·
2016-01-09 23:00
LeetCode
面试题
18.
4Sum
leetcode Python 2016 new Season
Givenanarray S of n integers,arethereelements a, b, c,and d in S suchthat a + b + c + d =target?Findalluniquequadrupletsinthearraywhichgivesthesumoftarget.Note:Elementsinaquadruplet(a,b,c,d)mustbeinno
hyperbolechi
·
2016-01-06 21:00
[leetcode] 18.
4Sum
解题报告
题目链接:https://leetcode.com/problems/
4sum
/Givenanarray S of n integers,arethereelements a, b, c,and d in
qq508618087
·
2016-01-04 05:00
LeetCode
array
LeetCode
4Sum
LeetCode解题之
4Sum
原题找出一个列表中四个元素之和为目标值的情况,打印出所有的情况。
u013291394
·
2015-12-21 20:00
LeetCode
算法
python
求和
2sum, 3sum,
4sum
和3sum closest总结
2sum,3sum,
4sum
和3sumclosest是四道类似的题目,后面三个都是2sum的延伸。
KickCode
·
2015-12-13 04:00
java
数组
【Leetcode】
4Sum
题目链接:https://leetcode.com/problems/
4sum
/题目:Givenanarray S of n integers,arethereelements a, b, c,and
yeqiuzs
·
2015-12-12 11:00
Two Pointers/hash/3Sum/
4Sum
类题目
当结果不唯一的时候,使用STL去重的最简单方式是1std::sort(res.begin(),res.end());2res.erase(unique(res.begin(),res.end()),res.end());STL去重首先是2Sum题目,构建一个hash表查找数的对应下标,求两个数的和,找到剩余差去hash查找。https://leetcode.com/problems/two-sum
DaI253
·
2015-12-08 14:27
leetcode 3sum closest &&
4sum
3sumclosesthttps://leetcode.com/problems/3sum-closest/这题与3sum类似,维护i,j,k,然后算mindiff就行.这里需要注意的是,是否需要去重复,题目说了只有一个solution,所以不用去重复。mycode:classSolution(object): defthreeSumClosest(self,nums,target): """
xyqzki
·
2015-11-30 17:00
LeetCode
LeetCode --
4Sum
题目描述:GivenanarraySofnintegers,arethereelementsa,b,c,anddinSsuchthata+b+c+d=target?Findalluniquequadrupletsinthearraywhichgivesthesumoftarget.Note:Elementsinaquadruplet(a,b,c,d)mustbeinnon-descendingor
csharp25
·
2015-11-29 22:00
4Sum
Givenanarray S of n integers,arethereelements a, b, c,and d in S suchthat a + b + c + d =target?Findalluniquequadrupletsinthearraywhichgivesthesumoftarget.Note:Elementsinaquadruplet(a,b,c,d)mustbeinno
qq_18343569
·
2015-11-27 17:00
leetcode------4Sum
标题:
4Sum
通过率: 21.4% 难度: 中等 Given an array S of n integers, are there elements
·
2015-11-13 14:12
LeetCode
leetcode
4Sum
题目描述: 给定一个包含n个整数的数组S和目标整数target,在S中找4个整数a,b,c,d,使得这a + b + c + d = target。找出所有符合这种情况的四元组。最终结果中的四元组要唯一且四元组内元素非降序。 题目来源: http://oj.leetcode.com/problems/
·
2015-11-13 14:40
LeetCode
LeetCode 018
4Sum
题目描述:
4Sum
Given an array S of n integers, are there elements a, b,
·
2015-11-13 13:24
LeetCode
LeetCode second time record
name status note 3Sum Closest 1 3Sum 1
4Sum
less(2) Add Binary
·
2015-11-13 12:59
LeetCode
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