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CodeSignal
CodeSignal
-Arrays(1):firstDuplicate
QuestionGivenanarrayathatcontainsonlynumbersintherangefrom1toa.length,findthefirstduplicatenumberforwhichthesecondoccurrencehastheminimalindex.Inotherwords,iftherearemorethan1duplicatednumbers,returnt
zxyccm
·
2023-06-20 07:30
CodeSignal
leetcode
CodeSignal
-Arrays(3):rotateImage
QuestionNote:Trytosolvethistaskin-place(withO(1)additionalmemory),sincethisiswhatyou'llbeaskedtododuringaninterview.Youaregivenannxn2Dmatrixthatrepresentsanimage.Rotatetheimageby90degrees(clockwise).E
zxyccm
·
2023-06-20 02:37
CodeSignal
算法
python
开发语言
leetcode
CodeSignal
-Arrays(5):isCryptSolution
QuestionAcryptarithmisamathematicalpuzzleforwhichthegoalistofindthecorrespondencebetweenlettersanddigits,suchthatthegivenarithmeticequationconsistingoflettersholdstruewhenthelettersareconvertedtodigit
zxyccm
·
2023-06-20 02:37
CodeSignal
数学建模
python
开发语言
leetcode
算法
CodeSignal
-Arrays(2):firstNotRepeatingCharacter
QuestionGivenastringsconsistingofsmallEnglishletters,findandreturnthefirstinstanceofanon-repeatingcharacterinit.Ifthereisnosuchcharacter,return'_'.ExampleFors="abacabad",theoutputshouldbesolution(s)='
zxyccm
·
2023-06-20 02:37
CodeSignal
数学建模
java
开发语言
leetcode
算法
CodeSignal
-Arrays(4):sudoku2
QuestionSudokuisanumber-placementpuzzle.Theobjectiveistofilla9×9gridwithnumbersinsuchawaythateachcolumn,eachrow,andeachofthenine3×3sub-gridsthatcomposethegridallcontainallofthenumbersfrom1to9onetime.I
zxyccm
·
2023-06-20 02:36
CodeSignal
python
开发语言
leetcode
算法
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