3Sum

leetcode——TwoSum、3Sum

TwoSumGivenanarrayofintegers,returnindicesofthetwonumberssuchthattheyadduptoaspecifictarget.Youmayassumethateachinputwouldhaveexactlyonesolution.Example:Givennums=[2,7,11,15],target=9,Becausenums[0]+n
duchy_8019·2016-11-18 23:51

3Sum,leetcode

大概一个月前写的3Sum，显示超时了，今天看到一片通过中有这么一个不通过，有点不甘心，稍作修改，通过了测试，虽然程序效率不怎么样publicList>threeSum(int[]nums){List>r
chenyanhui1087·2016-11-15 00:50

Leetcode 16. 3Sum Closest

这个题很简单，还是取一个值，然后另外两个值从两端向中间逼近publicclassSolution{publicintthreeSumClosest(int[]nums,inttarget){intlength=nums.length;ListnumList=newArrayList(length);for(intnum:nums){numList.add(num);}Collections.sor
chenatu·2016-11-01 00:00

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

3Sum

第一次写用了dfs，做了一定优化，但是还是TLE原来这种题有套路解法，用两个游标相对寻找会节省很多时间classSolution{public:vector>threeSum(vector&nums){set>res;//set不允许存储相同的元素，达到去重的效果sort(nums.begin(),nums.end());//压缩时间复杂度第一处for(intk=0;k0)break;//处理co
silenci·2016-10-10 15:34

leetcode 16 3Sum Closest

Question：GivenanarraySofnintegers,findthreeintegersinSsuchthatthesumisclosesttoagivennumber,target.Returnthesumofthethreeintegers.Youmayassumethateachinputwouldhaveexactlyonesolution.Forexample,givena
yangqi916·2016-09-22 21:52

3Sum

3sum温赵菊苣做过的题题目描述GivenanarraySofnintegers,arethereelementsa,b,cinSsuchthata+b+c=0?
DuanLiuchang·2016-09-11 12:33

Leetcode - 3Sum Smaller

Mycode:publicclassSolution{publicintthreeSumSmaller(int[]nums,inttarget){intret=0;Arrays.sort(nums);for(inti=0;i
Richardo92·2016-09-06 08:46

Leetcode 3sumclosest解法

此题与3sum很相似//Author:yqtao //Date:2016.6.17 //Email:[email protected] /*********************************
taoyanqi8932·2016-06-17 20:00

Leetcode 3sum高效解法

//Author:yqtao //Date:2016.6.17 //Email:[email protected] /***************************************************************************************GivenanarraySofnintegers,arethereelementsa,b,cinSsuchth
taoyanqi8932·2016-06-17 20:00

LeetCode:3Sum

3SumTotalAccepted: 123026 TotalSubmissions: 643583 Difficulty: MediumGivenanarray S of n integers,arethereelements a, b, c in S suchthat a + b + c =0? Findalluniquetripletsinthearraywhichgivesthesumof
itismelzp·2016-06-15 17:00

LeetCode:3Sum Closest

3SumClosestTotalAccepted: 80994 TotalSubmissions: 275223 Difficulty: MediumGivenanarray S of n integers,findthreeintegersin S suchthatthesumisclosesttoagivennumber,target. Returnthesumofthethreeintege
itismelzp·2016-06-15 17:00

【Leetcode】3Sum Closest

题目链接：https://leetcode.com/problems/3sum-closest/题目：Givenanarray S of n integers,findthreeintegersin S suchthatthesumisclosesttoagivennumber,target.Returnthesumofthethreeintegers.Youmayassumethateachin
yeqiuzs·2016-06-10 20:00

【leetcode】3Sum, 3Sum Closest

这两题一个套路。先排个序；外循环遍历数组，选出triplet第一个数；内循环处理该数之后的子数组，分别从头向后、从尾向前遍历，找到triplet后两个数；3SumClosest须另设两个变量，分别保存最接近target的和，及其与target的差距，在内循环中更新；时间代价O(n*n)。3SumclassSolution{public:vector>threeSum(vector&nums){ve
Rijkstra·2016-06-03 20:31

Middle-题目121：15. 3Sum

题目原文：GivenanarraySofnintegers,arethereelementsa,b,cinSsuchthata+b+c=0?Findalluniquetripletsinthearraywhichgivesthesumofzero.题目大意：给出一个数组s，求三元组(a,b,c)，其中a,b,c∈s且a+b+c=0。题目分析：典型的ksum问题，不求原数组下标，所以排序后固定一个指
cmershen·2016-05-31 20:00

Middle-题目67：16. 3Sum Closest

题目原文：GivenanarraySofnintegers,findthreeintegersinSsuchthatthesumisclosesttoagivennumber,target.Returnthesumofthethreeintegers.Youmayassumethateachinputwouldhaveexactlyonesolution.Forexample,givenarray
cmershen·2016-05-31 16:00

【Leetcode】3Sum

题目链接：https://leetcode.com/problems/3sum/题目：Givenanarray S of n integers,arethereelements a, b, c in S
yeqiuzs·2016-05-31 00:00

3Sum Closest

题目描述：GivenanarraySofnintegers,findthreeintegersinSsuchthatthesumisclosesttoagivennumber,target.Returnthesumofthethreeintegers.Youmayassumethateachinputwouldhaveexactlyonesolution.确定一个，然后用两指针法，代码如下：pub
yeshiwu·2016-05-26 17:00

【LeetCode】16. 3Sum Closest

题目GivenanarraySofnintegers,findthreeintegersinSsuchthatthesumisclosesttoagivennumber,target.Returnthesumofthethreeintegers.Youmayassumethateachinputwouldhaveexactlyonesolution.Forexample,givenarrayS={
u011613729·2016-05-14 16:00

leetcode_c++：3Sum Closest(016)

题目GivenanarraySofnintegers,findthreeintegersinSsuchthatthesumisclosesttoagivennumber,target.Returnthesumofthethreeintegers.Youmayassumethateachinputwouldhaveexactlyonesolution.Forexample,givenarrayS={
mijian1207mijian·2016-05-09 22:00

leetcode_c++：3Sum(015)

题目GivenanarraySofnintegers,arethereelementsa,b,cinSsuchthata+b+c=0?Findalluniquetripletsinthearraywhichgivesthesumofzero.Note:Elementsinatriplet(a,b,c)mustbeinnon-descendingorder.(ie,a≤b≤c)Thesolution
mijian1207mijian·2016-05-09 21:00

3Sum 超时

暴力求解3sum超时，花了一上午写的，超时，有时间换个思路写吧暂时就不改了 class Solution { public:     vector> threeSum(vector& nums) {         
依姆哣特·2016-05-09 10:00

3Sum Closest

题目描述：GivenanarraySofnintegers,findthreeintegersinSsuchthatthesumisclosesttoagivennumber,target.Returnthesumofthethreeintegers.Youmayassumethateachinputwouldhaveexactlyonesolution.Forexample,givenarray
yeshiwu·2016-05-06 16:00

3Sum

题目描述：GivenanarraySofnintegers,arethereelementsa,b,cinSsuchthata+b+c=0?Findalluniquetripletsinthearraywhichgivesthesumofzero.Note:Elementsinatriplet(a,b,c)mustbeinnon-descendingorder.(ie,a≤b≤c)Thesolut
yeshiwu·2016-05-06 16:00

Exercise(11)：3Sum和

/*郑志昭ThreeSum给定一个数组,a、b、c均为数组元素，要求找出不同的序列，其中a+b+c=0。(a usingnamespacestd; //用于存放a,b,c classSubArray { public: inta,b,c; voidoperator=(constSubArray&arr)//用于对象间的=赋值 { a=arr.a; b=arr.b; c=arr.c; } bool
MadBam_boo·2016-05-04 16:00

leetcode 16. 3Sum Closest

importjava.util.Arrays; //GivenanarraySofnintegers,findthreeintegersinSsuchthatthesumisclosesttoagivennumber,target. //Returnthesumofthethreeintegers.Youmayassumethateachinputwouldhaveexactlyonesolut
u011438605·2016-05-04 14:00

Leet Code OJ 15. 3Sum[Difficulty: Medium]

题目：GivenanarraySofnintegers,arethereelementsa,b,cinSsuchthata+b+c=0?Findalluniquetripletsinthearraywhichgivesthesumofzero.Note:Elementsinatriplet(a,b,c)mustbeinnon-descendingorder.(ie,a≤b≤c)Thesolutio
Lnho2015·2016-05-04 13:00

leetcode 15. 3Sum

importjava.util.Arrays; importjava.util.ArrayList; importjava.util.List; //GivenanarraySofnintegers,arethereelementsa,b,cinSsuchthata+b+c=0? //Findalluniquetripletsinthearraywhichgivesthesumofzero.
u011438605·2016-05-04 11:00

LeetCode 259. 3Sum Smaller

Twopointers.#include #include #include usingnamespacestd; /* Givenanarrayofnintegersnumsandatarget,findthenumberofindextripletsi,j,k with0&nums,inttarget){ if(nums.size()nums{-2,0,1,3}; cout<
github_34333284·2016-05-04 03:00

Leetcode 16. 3Sum Closest

Givenanarray S of n integers,findthreeintegersin S suchthatthesumisclosesttoagivennumber,target.Returnthesumofthethreeintegers.Youmayassumethateachinputwouldhaveexactlyonesolution.Forexample,givenarra
a2415180498·2016-05-02 11:00

Leetcode 15. 3Sum

Givenanarray S of n integers,arethereelements a, b, c in S suchthat a + b + c =0?Findalluniquetripletsinthearraywhichgivesthesumofzero.Note:Elementsinatriplet(a,b,c)mustbeinnon-descendingorder.(ie, a 
a2415180498·2016-05-01 19:00

【LeetCode】LeetCode——第16题：3Sum Closest

16.3SumClosest   MySubmissionsQuestionEditorialSolutionTotalAccepted: 76085 TotalSubmissions: 261853 Difficulty: MediumGivenanarray S of n integers,findthreeintegersin S suchthatthesumisclosesttoagive
hujingshuang·2016-04-29 21:00

【LeetCode】LeetCode——第15题：3Sum

15.3Sum   MySubmissionsQuestionEditorialSolutionTotalAccepted: 115091 TotalSubmissions: 612138 Difficulty: MediumGivenanarray S of n integers,arethereelements a, b, c in S suchthat a + b + c =0?Findal
hujingshuang·2016-04-29 20:00

16. 3Sum Closest

Givenanarray S of n integers,findthreeintegersin S suchthatthesumisclosesttoagivennumber,target.Returnthesumofthethreeintegers.Youmayassumethateachinputwouldhaveexactlyonesolution.Forexample,givenarra
qq_27991659·2016-04-28 17:00

15. 3Sum

Givenanarray S of n integers,arethereelements a, b, c in S suchthat a + b + c =0?Findalluniquetripletsinthearraywhichgivesthesumofzero.Note:Elementsinatriplet(a,b,c)mustbeinnon-descendingorder.(ie, a 
qq_27991659·2016-04-28 10:00

3Sum Closest(离目标值最近的三数之和)

GivenanarraySofnintegers,findthreeintegersinSsuchthatthesumisclosesttoagivennumber,target.Returnthesumofthethreeintegers.Youmayassumethateachinputwouldhaveexactlyonesolution.Forexample,givenarrayS={-1
yang20141109·2016-04-27 10:26

3Sum Closest(离目标值最近的三数之和)

GivenanarraySofnintegers,findthreeintegersinSsuchthatthesumisclosesttoagivennumber,target.Returnthesumofthethreeintegers.Youmayassumethateachinputwouldhaveexactlyonesolution. Forexample,givenarrayS={
yang20141109·2016-04-27 10:00

3Sum(数组中三个数之和为零)

GivenanarraySofnintegers,arethereelementsa,b,cinSsuchthata+b+c=0?Findalluniquetripletsinthearraywhichgivesthesumofzero. Forexample,givenarrayS={-1012-1-4}, Asolutionsetis: (-1,0,1) (-1,-1,2) 方法一：达不到时间
yang20141109·2016-04-27 09:00

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:3Sum Closest [M]

16.3SumClosest[M]GivenanarraySofnintegers,findthreeintegersinSsuchthatthesumisclosesttoagivennumber,target.Returnthesumofthethreeintegers.Youmayassumethateachinputwouldhaveexactlyonesolution.Forexampl
hk2291976·2016-04-19 21:00

LeetCode[Array]----3Sum Closest

3SumClosest Givenanarray S of n integers,findthreeintegersin S suchthatthesumisclosesttoagivennumber,target.Returnthesumofthethreeintegers.Youmayassumethateachinputwouldhaveexactlyonesolution.Forexamp
whiterbear·2016-04-19 10:00

LeetCode:3Sum[M]

我现在在做一个叫《leetbook》的开源书项目，把解题思路都同步更新到github上了，需要的同学可以去看看地址：https://github.com/hk029/leetcode这个是书的地址：https://hk029.gitbooks.io/leetbook/015.3Sum问题GivenanarraySofnintegers,arethereelementsa,b,cinSsuchtha
hk2291976·2016-04-18 23:00

LeetCode[Array]----3Sum

3SumGivenanarray S of n integers,arethereelements a, b, c in S suchthat a + b + c =0?Findalluniquetripletsinthearraywhichgivesthesumofzero.Note:Elementsinatriplet(a,b,c)mustbeinnon-descendingorder.(ie
whiterbear·2016-04-18 21:00

【一天一道LeetCode】#16. 3Sum Closest

一天一道LeetCode系列（一）题目：GivenanarraySofnintegers,findthreeintegersinSsuchthatthesumisclosesttoagivennumber,target.Returnthesumofthethreeintegers.Youmayassumethateachinputwouldhaveexactlyonesolution.Forexa
terence1212·2016-04-13 21:00

leetcode——16——3Sum Closest

GivenanarraySofnintegers,findthreeintegersinSsuchthatthesumisclosesttoagivennumber,target.Returnthesumofthethreeintegers.Youmayassumethateachinputwouldhaveexactlyonesolution.Forexample,givenarrayS={-1
happyxuma1991·2016-04-13 20:00

leetcode——15——3Sum

GivenanarraySofnintegers,arethereelementsa,b,cinSsuchthata+b+c=0?Findalluniquetripletsinthearraywhichgivesthesumofzero.Note:Elementsinatriplet(a,b,c)mustbeinnon-descendingorder.(ie,a≤b≤c)Thesolutionse
happyxuma1991·2016-04-13 19:00

LeetCode 16. 3Sum Closest

GivenanarraySofnintegers,findthreeintegersinSsuchthatthesumisclosesttoagivennumber,target.Returnthesumofthethreeintegers.Youmayassumethateachinputwouldhaveexactlyonesolution.Forexample,givenarrayS={-1
github_34333284·2016-04-12 22:00

【一天一道LeetCode】#15 3Sum

一天一道LeetCode系列（一）题目GivenanarraySofnintegers,arethereelementsa,b,cinSsuchthata+b+c=0?Findalluniquetripletsinthearraywhichgivesthesumofzero.Forexample,givenarrayS={-1012-1-4}, Asolutionsetis: (-1,0,1) (
terence1212·2016-04-12 11:00

从数组中选出n个数之和为k

LeetCode15.3Sum题目描述：https://leetcode.com/problems/3sum/GivenanarraySofnintegers,arethereelementsa,b,cinSsuchthata
_IanXiao·2016-04-11 20:56

从数组中选出n个数之和为k

LeetCode15.3Sum题目描述：https://leetcode.com/problems/3sum/GivenanarraySofnintegers,arethereelementsa,b,cinSsuchthata
_IanXiao·2016-04-11 20:56
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