LeetCode系列

【一天一道LeetCode】#59. Spiral Matrix II

一天一道LeetCode系列（一）题目Givenanintegern,generateasquarematrixfilledwithelementsfrom1ton2inspiralorder.Forexample
terence1212·2016-05-24 16:00

【一天一道LeetCode】#58. Length of Last Word

一天一道LeetCode系列（一）题目Givenastringsconsistsofupper/lower-casealphabetsandemptyspacecharacters’‘,returnthelengthoflastwordinthestring.Ifthelastworddoesnotexist
terence1212·2016-05-23 20:00

【一天一道LeetCode】#57. Insert Interval

一天一道LeetCode系列（一）题目Givenasetofnon-overlappingintervals,insertanewintervalintotheintervals(mergeifnecessary
terence1212·2016-05-23 20:00

【一天一道LeetCode】#56. Merge Intervals

一天一道LeetCode系列（一）题目Givenacollectionofintervals,mergealloverlappingintervals.Forexample,Given[1,3],[2,6
terence1212·2016-05-22 19:00

【一天一道LeetCode】#55. Jump Game

一天一道LeetCode系列（一）题目Givenanarrayofnon-negativeintegers,youareinitiallypositionedatthefirstindexofthearray.Eachelementinthearrayrepresentsyourmaximumjumplengthatthatposition.Determineifyouareabletoreach
terence1212·2016-05-21 09:00

【一天一道LeetCode】#54. Spiral Matrix

一天一道LeetCode系列（一）题目Givenamatrixofmxnelements(mrows,ncolumns),returnallelementsofthematrixinspiralorder.Forexample
terence1212·2016-05-20 09:00

【一天一道LeetCode】#53. Maximum Subarray

一天一道LeetCode系列（一）题目Findthecontiguoussubarraywithinanarray(containingatleastonenumber)whichhasthelargestsum.Forexample
terence1212·2016-05-18 22:00

【一天一道LeetCode】#52. N-Queens II

一天一道LeetCode系列（一）题目FollowupforN-Queensproblem.Now,insteadoutputtingboardconfigurations,returnthetotalnumberofdistinctsolutions
terence1212·2016-05-17 14:00

【一天一道LeetCode】#51. N-Queens

一天一道LeetCode系列（一）题目Then-queenspuzzleistheproblemofplacingnqueensonann×nchessboardsuchthatnotwoqueensattackeachother.Givenanintegern
terence1212·2016-05-17 14:00

【一天一道LeetCode】#50. Pow(x, n)

一天一道LeetCode系列（一）题目Implementpow(x,n).（二）解题题目很简单，实现x的n次方。
terence1212·2016-05-15 13:00

【一天一道LeetCode】#49. Group Anagrams

一天一道LeetCode系列（一）题目Givenanarrayofstrings,groupanagramstogether.Forexample,given:[“eat”,“tea”,“tan”,“ate
terence1212·2016-05-15 13:00

【一天一道LeetCode】#48. Rotate Image

一天一道LeetCode系列（一）题目Youaregivenannxn2Dmatrixrepresentinganimage.Rotatetheimageby90degrees(clockwise).Followup
terence1212·2016-05-15 13:00

【一天一道LeetCode】#47. Permutations II

一天一道LeetCode系列（一）题目Givenacollectionofnumbersthatmightcontainduplicates,returnallpossibleuniquepermutations.Forexample
terence1212·2016-05-10 16:00

【一天一道LeetCode】#46. Permutations

一天一道LeetCode系列（一）题目Givenacollectionofdistinctnumbers,returnallpossiblepermutations.Forexample,[1,2,3]
terence1212·2016-05-10 14:00

【一天一道LeetCode】#45. Jump Game II

一天一道LeetCode系列（一）题目Givenanarrayofnon-negativeintegers,youareinitiallypositionedatthefirstindexofthearray.Eachelementinthearrayrepresentsyourmaximumjumplengthatthatposition.Yourgoalistoreachthelastinde
terence1212·2016-05-09 15:00

【一天一道LeetCode】#44. Wildcard Matching

一天一道LeetCode系列（一）题目Implementwildcardpatternmatchingwithsupportfor‘?’and‘*’.‘?’
terence1212·2016-05-08 21:00

【一天一道LeetCode】#43. Multiply Strings

一天一道LeetCode系列（一）题目Giventwonumbersrepresentedasstrings,returnmultiplicationofthenumbersasastring.Note
terence1212·2016-05-07 22:00

【一天一道LeetCode】#42. Trapping Rain Water

一天一道LeetCode系列（一）题目Givennnon-negativeintegersrepresentinganelevationmapwherethewidthofeachbaris1,computehowmuch
terence1212·2016-05-06 15:00

【一天一道LeetCode】#41. First Missing Positive

一天一道LeetCode系列（一）题目Givenanunsortedintegerarray,findthefirstmissingpositiveinteger.Forexample,Given[1,2,0
terence1212·2016-05-05 20:00

【一天一道LeetCode】#40. Combination Sum II

一天一道LeetCode系列（一）题目Givenacollectionofcandidatenumbers(C)andatargetnumber(T),findalluniquecombinationsinCwherethecandidatenumberssumstoT.EachnumberinCmayonlybeusedonceinthecombination.Note
terence1212·2016-05-04 19:00

【一天一道LeetCode】#39. Combination Sum

一天一道LeetCode系列（一）题目Givenasetofcandidatenumbers(C)andatargetnumber(T),findalluniquecombinationsinCwherethe
terence1212·2016-05-03 23:00

【一天一道LeetCode】#35. Search Insert Position

一天一道LeetCode系列（一）题目Givenasortedarrayandatargetvalue,returntheindexifthetargetisfound.Ifnot,returntheindexwhereitwould
terence1212·2016-05-02 17:00

【一天一道LeetCode】#34. Search for a Range

一天一道LeetCode系列（一）题目Givenasortedarrayofintegers,findthestartingandendingpositionofagiventargetvalue.Youralgorithm
terence1212·2016-05-01 11:00

【一天一道LeetCode】#38. Count and Say

一天一道LeetCode系列（一）题目Thecount-and-saysequenceisthesequenceofintegersbeginningasfollows:1,11,21,1211,111221
terence1212·2016-04-30 22:00

【一天一道LeetCode】#32. Longest Valid Parentheses

一天一道LeetCode系列（一）题目Givenastringcontainingjustthecharacters‘(’and‘)’,findthelengthofthelongestvalid(well-formed
terence1212·2016-04-28 21:00

【一天一道LeetCode】#31. Next Permutation

一天一道LeetCode系列（一）题目Implementnextpermutation,whichrearrangesnumbersintothelexicographicallynextgreaterpermutationofnumbers.Ifsucharrangementisnotpossible
terence1212·2016-04-27 15:00

【一天一道LeetCode】#29. Divide Two Integers

一天一道LeetCode系列（一）题目Dividetwointegerswithoutusingmultiplication,divisionandmodoperator.Ifitisoverflow,
terence1212·2016-04-26 18:00

【一天一道LeetCode】#28. Implement strStr()

一天一道LeetCode系列（一）题目ImplementstrStr().Returnstheindexofthefirstoccurrenceofneedleinhaystack,or-1ifneedleisnotpartofhaystack
terence1212·2016-04-25 16:00

【一天一道LeetCode】#27. Remove Element

一天一道LeetCode系列（一）题目Givenanarrayandavalue,removeallinstancesofthatvalueinplaceandreturnthenewlength.Donotallocateextraspaceforanotherarray
terence1212·2016-04-25 14:00

【一天一道LeetCode】#26. Remove Duplicates from Sorted Array

一天一道LeetCode系列（一）题目Givenasortedarray,removetheduplicatesinplacesuchthateachelementappearonlyonceandreturnthenewlength.Donotallocateextraspaceforanotherarray
terence1212·2016-04-25 14:00

【一天一道LeetCode】#25. Reverse Nodes in k-Group

一天一道LeetCode系列（一）题目Givenalinkedlist,reversethenodesofalinkedlistkatatimeandreturnitsmodifiedlist.Ifthenumberofnodesisnotamultipleofkthenleft-outnodesintheendshouldremainasitis.Youmaynotalterthevaluesi
terence1212·2016-04-23 15:00

【一天一道LeetCode】#24. Swap Nodes in Pairs

一天一道LeetCode系列（一）题目Givenalinkedlist,swapeverytwoadjacentnodesandreturnitshead.Forexample,Given1->2->3
terence1212·2016-04-22 21:00

【一天一道LeetCode】#23. Merge k Sorted Lists

一天一道LeetCode系列（一）题目Mergeksortedlinkedlistsandreturnitasonesortedlist.Analyzeanddescribeitscomplexity.
terence1212·2016-04-21 16:00

【一天一道LeetCode】#10. Regular Expression Matching

一天一道LeetCode系列（一）题目Implementregularexpressionmatchingwithsupportfor‘.’and‘*’.‘.’Matchesanysinglecharacter
terence1212·2016-04-19 00:00

【一天一道LeetCode】#21. Merge Two Sorted Lists

一天一道LeetCode系列（一）题目Mergetwosortedlinkedlistsandreturnitasanewlist.Thenewlistshouldbemadebysplicingtogetherthenodesofthefirsttwolists
terence1212·2016-04-17 22:00

【一天一道LeetCode】#20. Valid Parentheses

一天一道LeetCode系列（一）题目Givenastringcontainingjustthecharacters‘(‘,‘)’,‘{‘,‘}’,‘[’and‘]’,determineiftheinputstringisvalid.Thebracketsmustcloseinthecorrectorder
terence1212·2016-04-17 22:00

【一天一道LeetCode】#19. Remove Nth Node From End of List

一天一道LeetCode系列（一）题目Givenalinkedlist,removethenthnodefromtheendoflistandreturnitshead.Forexample,Givenlinkedlist
terence1212·2016-04-16 22:00

【一天一道LeetCode】#16. 3Sum Closest

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

【一天一道LeetCode】#15 3Sum

一天一道LeetCode系列（一）题目GivenanarraySofnintegers,arethereelementsa,b,cinSsuchthata+b+c=0?
terence1212·2016-04-12 11:00

【一天一道LeetCode】#14 Longest Common Prefix

一天一道LeetCode系列（一）题目：Writeafunctiontofindthelongestcommonprefixstringamongstanarrayofstrings.
terence1212·2016-04-10 22:00

【一天一道LeetCode】#13. Roman to Integer

一天一道LeetCode系列（一）题目Givenaromannumeral,convertittoaninteger.Inputisguaranteedtobewithintherangefrom1to3999
terence1212·2016-04-08 15:00

【一天一道LeetCode】#12 Integer to Roman

一天一道LeetCode系列（一）题目Givenaninteger,convertittoaromannumeral.Inputisguaranteedtobewithintherangefrom1to3999
terence1212·2016-04-08 15:00

【一天一道LeetCode】#11Container With Most Water

一天一道LeetCode系列（一）题目Givennnon-negativeintegersa1,a2,…,an,whereeachrepresentsapointatcoordinate(i,ai).nverticallinesaredrawnsuchthatthetwoendpointsoflineiisat
terence1212·2016-04-06 23:00

【一天一道LeetCode】#9. Palindrome Number

一天一道LeetCode系列（一）题目Determinewhetheranintegerisapalindrome.Dothiswithoutextraspace.Somehints:Couldnegativeintegersbepalindromes
terence1212·2016-04-05 15:00

【一天一道LeetCode】#8. String to Integer (atoi)

一天一道LeetCode系列（一）题目Implementatoitoconvertastringtoaninteger.Hint:Carefullyconsiderallpossibleinputcases.Ifyouwantachallenge
terence1212·2016-04-04 16:00

【一天一道LeetCode】#7. Reverse Integer

一天一道LeetCode系列（一）题目Reversedigitsofaninteger.Example1:x=123,return321Example2:x=-123,return-321（二）解题这题看上去很简单
terence1212·2016-04-04 15:00

【一天一道LeetCode】#6 ZigZag Conversion

一天一道LeetCode系列（一）题目Thestring“PAYPALISHIRING”iswritteninazigzagpatternonagivennumberofrowslikethis:(youmaywanttodisplaythispatterninafixedfontforbetterlegibility
terence1212·2016-04-03 16:00

【一天一道LeetCode】#5 Longest Palindromic Substring

一天一道LeetCode系列（一）题目GivenastringS,findthelongestpalindromicsubstringinS.YoumayassumethatthemaximumlengthofSis1000
terence1212·2016-04-02 17:00

【一天一道leetcode】 #2 Add Two Numbers

一天一道leetcode系列（一）题目：Youaregiventwolinkedlistsrepresentingtwonon-negativenumbers.Thedigitsarestoredinreverseorderandeachoftheirnodescontainasingledigit.Addthetwonumbersandreturnitasalinkedlist.Input
terence1212·2016-03-30 16:00

【一天一道LeetCode】 #1 Two Sum

一天一道LeetCode系列(一)题目Givenanarrayofintegers,returnindicesofthetwonumberssuchthattheyadduptoaspecifictarget.Youmayassumethateachinputwouldhaveexactlyonesolution.Example
terence1212·2016-03-30 15:00
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