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Combinations
【算法】-- 【实现字符串的反转、判断两个字符串是否由相同的字符组成、删除重复的字符、统计字符串由多少个单词、按要求打印数组排列情况、输出字符串所有组合】
youloveI”思路:第一次对整个字符串中的字符进行反转,然后对每个单词进行反转publicvoidswap(char[]cArr,intbegin,intend){while(begingetAll
Combinations
春来桃花开
·
2020-06-22 00:56
算法
字符串
Letter
Combinations
of a Phone Number (M)
Letter
Combinations
ofaPhoneNumber(M)题目Givenastringcontainingdigitsfrom2-9inclusive,returnallpossibleletter
combinations
thatthenumbercouldrepresent.Amappingofdigittoletters
墨云黑
·
2020-06-20 04:00
Letter
Combinations
of a Phone Number (M)
Letter
Combinations
ofaPhoneNumber(M)题目Givenastringcontainingdigitsfrom2-9inclusive,returnallpossibleletter
combinations
thatthenumbercouldrepresent.Amappingofdigittoletters
墨云黑
·
2020-06-20 04:00
LeetCode 77,组合挑战,你能想出不用递归的解法吗?
本文始发于个人公众号:TechFlow,原创不易,求个关注今天是LeetCode第46篇文章,我们一起来LeetCode中的77题,
Combinations
(组合)。
TechFlow2019
·
2020-06-16 10:00
LeetCode DFS搜索与回溯专题
DFS+回溯专题17.电话号码的字母组合迭代也可以实现搜索循环改写dfs搜索的写法:例如C++写法classSolution{public:vectorletter
Combinations
(stringdigits
fishers
·
2020-05-26 23:00
Leetcode 39. Combination Sum(python+cpp)
Leetcode39.
CombinationS
um题目解析:题目解析:这题是77的followup。
努利!奋斗!
·
2020-05-15 08:57
Leetcode
动态规划
c++
python
leetcode
backtrack
设计模式之建造者模式(Builder Pattern)
Inclassesthathavealotoffieldsyouoftentimesendupwithmanyconstructorsasyoumightneedobjectsusingdifferentfield
combinations
.TheBuilderpatternenablesamorereadableobjectcreationandlet
杨斌_1024
·
2020-05-07 23:58
c# linq 实现 m选n 组合
voidMain(){varresult=new[]{1,2,3,4,5,6,7,8,9}.Different
Combinations
(3);result.Dump();}publicstaticclassEx
空明流光
·
2020-04-24 14:00
[leetcode
Combinations
] 使用递归代替任意重循环
先附上原题:给定两个数n和k,写出所有k个数字的组合,数值范围从1~n,并且每一个组合中的数字不得重复。这道题目首先想到的是利用多重循环,比如说在k=2的情况下,那代码应该是这样的,有两重循环:for(i=1ton)for(j=i+1ton)但是如果说k=10呢,难道也要写10重循环?更何况k本身是一个未知的变量。我们同样以原题上的例子为例,假如第一个数取1,那第二个数就可以取2,3或者4;如果第
书呆子的复仇
·
2020-04-12 13:23
Leetcode - Combination Sum II
importjava.util.ArrayList;importjava.util.Arrays;importjava.util.List;publicclassSolution{publicList>
combinationS
um2
Richardo92
·
2020-04-12 13:00
动态规划之数组
1.Givenanintegerarraywithallpositivenumbersandnoduplicates,findthenumberofpossible
combinations
thatadduptoapositiveintegertarget.Example
mrjunwang
·
2020-04-12 10:17
Leetcode-Combination Sum(39,40,216)
CombinationS
um(39,40,216)Givenasetofcandidatenumbers(C)(withoutduplicates)andatargetnumber(T),findallunique
combinations
inCwherethecandidatenumberssumstoT.ThesamerepeatednumbermaybechosenfromCunlimited
raincoffee
·
2020-04-11 19:24
Letter
Combinations
of a Phone Number
Givenadigitstring,returnallpossibleletter
combinations
thatthenumbercouldrepresent.Amappingofdigittoletters
哲哲哥
·
2020-04-11 18:05
40. Combination Sum II
Givenacollectionofcandidatenumbers(C)andatargetnumber(T),findallunique
combinations
inCwherethecandidatenumberssumstoT.EachnumberinCmayonlybeusedonceinthecombination.Note
juexin
·
2020-04-11 04:37
40. Combination Sum II
题目Givenacollectionofcandidatenumbers(C)andatargetnumber(T),findallunique
combinations
inCwherethecandidatenumberssumstoT.EachnumberinCmayonlybeusedonceinthecombination.Note
Al73r
·
2020-04-10 19:53
LeetCode Ex22 Generate Parentheses
GenerateParenthesesGivennpairsofparentheses,writeafunctiontogenerateall
combinations
ofwell-formedparentheses.Forexample
杨鹏然不是个废物
·
2020-04-10 06:21
scala-problem26-30
P26(**)Generatethe
combinations
ofKdistinctobjectschosenfromtheNelementsofalist.要求Inhowmanywayscana
hylexus
·
2020-04-09 22:36
每天一题LeetCode【第29天】
T39.
CombinationS
um【Medium】前言这就要开学了,想想寒假虽然没写多少,但还是保持了一天一题的leetcode,但是开学事情多起来了,还要准备考托福,申请实习什么的,同时还想去写点其他的代码
草稿纸反面
·
2020-04-08 22:53
22. Generate Parentheses
题目链接tag:MediumDFSquestion: Givennpairsofparentheses,writeafunctiontogenerateall
combinations
ofwell-formedparentheses.examplegivenn
xingzai
·
2020-04-08 10:11
leetcode22 括号匹配
leetcode刷题笔记leetcode22问题描述:Givennpairsofparentheses,writeafunctiontogenerateall
combinations
ofwell-formedparentheses.Forexample
数据挖掘小菜
·
2020-04-07 19:18
Letter
Combinations
OfAPhoneNumber
publicArrayListletter
Combinations
(Stringdi
DrunkPian0
·
2020-04-07 17:07
[Leetcode][深度优先/回溯法/DFS]相关题目汇总/分析/总结
目前范围:Leetcode前150题深度优先/回溯法题目Letter
Combinations
ofaPhoneNumber/电话号码的字母组合输入手机键盘的数字,组合所有可能的字母。
蛮三刀把刀
·
2020-04-06 10:26
40. Combination Sum II
Givenacollectionofcandidatenumbers(C)andatargetnumber(T),findallunique
combinations
inCwherethecandidatenumberssumstoT.EachnumberinCmayonlybeusedonceinthecombination.Note
Jeanz
·
2020-04-06 06:17
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
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