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Combinations
39. Combination Sum
Givenasetofcandidatenumbers(C)(withoutduplicates)andatargetnumber(T),findallunique
combinations
inCwherethecandidatenumberssumstoT.ThesamerepeatednumbermaybechosenfromCunlimitednumberoftimes.Note
Jeanz
·
2020-04-05 07:32
niboto生活小报开张啦
主题:Wearbrightcolor
combinations
Embraceyourinnerchildandwearwhimsicalrainbowpatternsandbright,boldcolorcombos.Attendinga1
TO_2017
·
2020-04-05 06:37
Letter
Combinations
of a Phone Number
Givenadigitstring,returnallpossibleletter
combinations
thatthenumbercouldrepresent.Amappingofdigittoletters
Jeanz
·
2020-04-05 04:18
A general approach to backtracking questions in Java (Subsets, Permutations, Combination Sum, Palindrome Partitioning
Leetcode-AgeneralapproachtobacktrackingquestionsinJava(Subsets,Permutations,
CombinationS
um,PalindromePartitioning
raincoffee
·
2020-04-05 04:26
Letter
Combinations
of a Phone Number
//17.Letter
Combinations
ofaPhoneNumber#include#include#include#includeusingnamespacestd;classSolution{
极速魔法
·
2020-04-04 12:24
粗谈Python内置库itertools
Functionscreatingiteratorsforefficientlooping,定义了一系列的方法,能帮助我们创建能够进行高效遍历迭代的迭代器,里面包含不少有意思并且有用的方法,比如像chain,izip/izip_longest,
combinations
TypingQuietly
·
2020-04-03 23:52
377. Combination Sum IV
Givenanintegerarraywithallpositivenumbersandnoduplicates,findthenumberofpossible
combinations
thatadduptoapositiveintegertarget.Example
Jeanz
·
2020-04-03 13:46
用Medium学英语(三)
文章出处:Designprinciple:Hick’sLaw — quickdecisionmaking词语Incomparison
combinations
multiplytriggerednarrowdownbigvolumesofbreakitdowndeliverydropoffinteractiondeliberationanalysisparalysis.feelingfrustrati
世界第一帅的人
·
2020-04-03 03:01
leetcode轮回计划20181117
306AddtiveNumber题意:判断一个字符串能不能构成连加字符串defisAdditiveNumber(self,num):n=len(num)fori,jinitertools.
combinations
Songger
·
2020-04-03 01:27
Lintcode152
Combinations
solution 题解
【题目描述】Giventwointegersnandk,returnallpossible
combinations
ofknumbersoutof1...n.组给出两个整数n和k,返回从1......n中选出的
程风破浪会有时
·
2020-04-02 22:18
131. Palindrome Partitioning
当一个dfs在for循环里,那么for循环的初始值写成i=start的时候,通常是想让递归在进入下一层的时候不从原来的位置开始(例如
combinations
umii)。
DrunkPian0
·
2020-04-02 13:13
Letter
Combinations
of a Phone Number
recursionfor
combinations
classSolution(object):defletter
Combinations
(self,digits):""":typedigits:str:rtype
阿团相信梦想都能实现
·
2020-04-01 12:45
93. Restore IP Addresses
*93.RestoreIPAddressesGivenastringcontainingonlydigits,restoreitbyreturningallpossiblevalidIPaddress
combinations
.Forexample
小万叔叔
·
2020-03-31 13:09
24. Generate Parentheses FROM Leetcode
题目Givennpairsofparentheses,writeafunctiontogenerateall
combinations
ofwell-formedparentheses.Forexample
时光杂货店
·
2020-03-31 04:25
LeetCode每日一题:generate parentheses
问题描述Givennpairsofparentheses,writeafunctiontogenerateall
combinations
ofwell-formedparentheses.Forexample
yoshino
·
2020-03-30 21:19
Letter
Combinations
of a Phone Number
Givenastringcontainingdigitsfrom2-9inclusive,returnallpossibleletter
combinations
thatthenumbercouldrepresent.Amappingofdigittoletters
云端漫步_b5aa
·
2020-03-30 15:41
Combinations
Giventwointegersnandk,returnallpossible
combinations
ofknumbersoutof1...n.第一种解法:returnlist(itertools.
combinations
云端漫步_b5aa
·
2020-03-30 12:02
17. 电话号码的字母组合
defletter
Combinations
(self,digits):""":typedigits:str:rtype:List[str]"""iflen(digits)==0:return[]kv={
enjoy_算法工程师
·
2020-03-30 11:58
Leetcode - Letter
Combinations
of a Phone Number
Paste_Image.pngMycode:importjava.util.ArrayList;importjava.util.List;publicclassSolution{publicListletter
Combinations
Richardo92
·
2020-03-28 19:32
Quick Tip #16: 探索组合
$perl6>my@n=;[123]>my$n=4;4>my@c=@nxx$n输出:[[123][123][123][123]]现在我想要长度为$n的一堆列表的所有排列(
combinations
):>(
焉知非鱼
·
2020-03-27 23:20
Letter
Combinations
of a Phone Number
Medium好久没写过recursion感觉什么backtracking这些都忘了怎么写了,这道题拿来回顾一下吧。画一画recursiontree.(画不下,b开头的答案没画)image.pnghelper函数的定义就是当前能组成的字符是sb,当前所有储存的答案res,当前数字和char对应的map和给予的digits下,能组成哪些新的string,把这些string加到res里面。注意几点:Li
greatfulltime
·
2020-03-27 18:49
Combination Sum IV
一开始想着直接深搜,后来看看不太行,超时,看了下tags,对啊,傻逼了,可以用DP啊,然后就用了DP,代码如下:classSolution{public:int
combinationS
um4(vector
我叫胆小我喜欢小心
·
2020-03-27 15:44
Letter
Combinations
of a Phone Number
Medium这题用DFS,注意下每次搜索遍历的下一个字符是digits.charAt(sb.length().然后要backtracking.classSolution{publicListletter
Combinations
greatfulltime
·
2020-03-27 14:57
combination sum ii
Givenacollectionofcandidatenumbers(C)andatargetnumber(T),findallunique
combinations
inCwherethecandidatenumberssumstoT.EachnumberinCmayonlybeusedonceinthecombination.ExampleGivencandidateset
Zihowe
·
2020-03-27 11:56
LeetCode每日一题:
combinations
问题描述Giventwointegersnandk,returnallpossible
combinations
ofknumbersoutof1...n.Forexample,Ifn=4andk=2,asolutionis
yoshino
·
2020-03-27 07:36
说说itertools模块里的
combinations
今天来温习一下最常用的
combinations
combinations
()描述:Returnrlengthsubsequencesofelementsfromtheinputiterable.根据输入的数据
Ryan_Yang
·
2020-03-25 23:28
#每天读一点服装史# THE RISE AND FALL OF THE BUSTLE
1888THERISEANDFALLOFTHEBUSTLEBy1880therewasnodiscerniblebustle,andfishtailtrainswererejected.1880Cotton
combinations
—chemiseanddrawers—werewornunderthemainoutfit
末小闲
·
2020-03-25 09:07
Letter
Combinations
of a Phone Number
Givenadigitstring,returnallpossibleletter
combinations
thatthenumbercouldrepresent.Amappingofdigittoletters
飞飞廉
·
2020-03-25 00:17
LeetCode每日一题:letter combination of a phone number
问题描述Givenadigitstring,returnallpossibleletter
combinations
thatthenumbercouldrepresent.Amappingofdigittoletters
yoshino
·
2020-03-24 22:15
22. Generate Parentheses
DescriptionGivennpairsofparentheses,writeafunctiontogenerateall
combinations
ofwell-formedparentheses.Forexample
Nancyberry
·
2020-03-24 17:49
22. Generate Parentheses
Givennpairsofparentheses,writeafunctiontogenerateall
combinations
ofwell-formedparentheses.Forexample,givenn
Jeanz
·
2020-03-24 11:09
四月二十八号
ReservoirSampling的一个应用,现在这些题目越来越难了啊46.Permutations:这题倒是简单,我先把简单的挑出来做了,然后再做难的319.BulbSwitcher:这是属于脑力题啊,不过还挺有意思的377.
CombinationS
umIV
健时总向乱中忙
·
2020-03-24 00:34
17.Letter
Combinations
of a Phone Number
,空间复杂度O(n)publicListletter
Combinations
(Stringdigits){Listlist=newArrayListlist,Strings){if(s.length()
一位不愿透露姓名的李小姐
·
2020-03-23 17:05
R2 | #30天专注橙长计划#~SAS~Day 19
使用procfreq最明显的目的是现实分类数据的分布情况,基本形式为:PROCFREQ;TABLESvariable-
combinations
;产生一维频率表,只要列出变量名。
胡阿白
·
2020-03-23 15:42
Letter
Combinations
of a Phone Number
电话号码的字母组合。题意是给一个string,里面是数字,请返回所有可能的字母组合。例子,Example:Input:"23"Output:["ad","ae","af","bd","be","bf","cd","ce","cf"].这是典型的backtracking回溯类的题目,一定要会。回溯类的题目一般都是带着一个prefix前缀,然后不断地尝试不同的组合直到最后的结果满足一定的情况,往往是长
朝鲜冷面杀手
·
2020-03-23 14:00
Leetcode BackTracking问题汇总
publicclassSolution{publicList>
combinationS
um(int[]candidates,inttarget){Arrays.sort(candidates);List
尴尴尬尬先生
·
2020-03-22 20:15
216. Combination Sum III
Findallpossible
combinations
ofknumbersthatadduptoanumbern,giventhatonlynumbersfrom1to9canbeusedandeach
combinations
houldbeauniquesetofnumbers.Example1
我是你的果果呀
·
2020-03-20 10:09
Leetcode--Backtracking
17.Letter
Combinations
ofaPhoneNumber这道题在string分类里已经写过了,有递归和非递归两种方法,思路都是先从string里只有一个数字开始,得到一个结果,再不断向结果里添加新的数字字符
Morphiaaa
·
2020-03-20 05:50
306. Additive Number
importitertoolsclassSolution(object):defisAdditiveNumber(self,num):""":typenum:str:rtype:bool"""n=len(num)fori,jinitertools.
combinations
阿团相信梦想都能实现
·
2020-03-20 00:26
39. Combination Sum
DescriptionGivenasetofcandidatenumbers(C)(withoutduplicates)andatargetnumber(T),findallunique
combinations
inCwherethecandidatenumberssumstoT.ThesamerepeatednumbermaybechosenfromCunlimitednumberoftimes
Nancyberry
·
2020-03-19 23:05
LeetCode—39、40.Combination Sum
mediumGivenasetofcandidatenumbers(candidates)(withoutduplicates)andatargetnumber(target),findallunique
combinations
incandidateswherethecandidatenumberssumstotarget.Thesamerepeatednumbermaybecho
萌小熙喵
·
2020-03-19 02:48
LeetCode每日一题:combination sum i
问题描述Givenasetofcandidatenumbers(C)andatargetnumber(T),findallunique
combinations
inCwherethecandidatenumberssumstoT.ThesamerepeatednumbermaybechosenfromCunlimitednumberoftimes.Note
yoshino
·
2020-03-18 22:02
Restore IP Addresses
Givenastringcontainingonlydigits,restoreitbyreturningallpossiblevalidIPaddress
combinations
.Forexample
98Future
·
2020-03-18 22:33
102. Binary Tree Level Order Traversal
Givenadigitstring,returnallpossibleletter
combinations
thatthenumbercouldrepresent.Amappingofdigittoletters
sherwin29
·
2020-03-18 08:32
[Leetcode] 46. Combination Sum
题目Givenasetofcandidatenumbers(C)(withoutduplicates)andatargetnumber(T),findallunique
combinations
inCwherethecandidatenumberssumstoT.ThesamerepeatednumbermaybechosenfromCunlimitednumberoftimes.Note
时光杂货店
·
2020-03-17 11:02
回溯法
www.cnblogs.com/jiangchen/p/5930049.html回溯法概念(http://www.cnblogs.com/jiangchen/p/5393849.html)LeetCode39.
CombinationS
um
mrjunwang
·
2020-03-17 05:26
Factor
Combinations
Medium我一刷的时候写的是"似懂非懂”,然后二刷的时候就没做出来。彻底理解一道题比刷完重要很多,刷题一定要重视质量。我是因为最近要面试了狂刷tag题过得比较快,但重点题还是得扣细节.classSolution{publicList>getFactors(intn){List>res=newArrayListlist=newArrayList>res,Listlist,intstartNum,i
greatfulltime
·
2020-03-16 13:39
Leetcode - Combination Sum III
Mycode:importjava.util.ArrayList;importjava.util.List;publicclassSolution{publicList>
combinationS
um3(
Richardo92
·
2020-03-16 02:51
39+40、Combination Sum、Combination Sum 2
CombinationS
umForexample,givencandidateset2,3,6,7andtarget7,Asolutionsetis:[7][2,2,3]解法publicclassSolution
小鲜贝
·
2020-03-15 12:32
Combination sum 系列问题
CombinationS
umGivenasetofcandidatenumbers(candidates)(withoutduplicates)andatargetnumber(target),findallunique
combinations
incandidateswherethecandidatenumberssumstotarget.Thesamerepeatednumbermaybecho
Phoebe_Liu
·
2020-03-15 05:11
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