PrepCode

Hash Table

744 problems

Algorithms pattern questions across top companies

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Showing 744 questions
#1Two SumEasyarrayNeetCodeAMDAccentureAccolite
#3Longest Substring Without Repeating CharactersMediumhash tableNeetCodeAccentureAccoliteAdobe
#12Integer to RomanMediumhash tableWalkCCCAMDAdobeAgoda
#13Roman to IntegerEasyhash tableNeetCodeAMDAccentureAdobe
#36Valid SudokuMediumarrayNeetCodeAmazonAppleBloomberg
#41First Missing PositiveHardarrayNeetCodeAdobeAmazonBloomberg
#49Group AnagramsMediumarrayNeetCodeAccentureAccoliteAdobe
#76Minimum Window SubstringHardhash tableNeetCodeAdobeAirbnbAmazon
#127Word LadderHardhash tableNeetCodeAdobeAmazonApple
#128Longest Consecutive SequenceMediumarrayNeetCodeAdobeAmazonApple
#133Clone GraphMediumhash tableNeetCodeAmazonAppleBloomberg
#138Copy List with Random PointerMediumhash tableNeetCodeAdobeAmazonArista Networks
#139Word BreakMediumarrayNeetCodeAmazonAppleArista Networks
#141Linked List CycleEasyhash tableNeetCodeAmazonAutodeskBloomberg
#146LRU CacheMediumhash tableNeetCodeAccentureAdobeAirwallex
#149Max Points on a LineHardarrayWalkCCCAmazonAppleBloomberg
#169Majority ElementEasyarrayNeetCodeAccentureAdobeAmazon
#202Happy NumberEasyhash tableNeetCodeAccentureAgodaAirbnb
#205Isomorphic StringsEasyhash tableWalkCCCAccentureAmazonAmerican Express
#208Implement Trie (Prefix Tree)Mediumhash tableNeetCodeAmazonAppleBloomberg
#229Majority Element IIMediumarrayNeetCodeAccentureAmazonBloomberg
#242Valid AnagramEasyhash tableNeetCodeAccentureAffirmAmadeus
#264Ugly Number IIMediumhash tableWalkCCCAmazonBloombergGoogle
#305Number of Islands IIHardarrayWalkCCCAmazonGoogleMeta
#340Longest Substring with At Most K Distinct CharactersMediumhash tableWalkCCCAmazonAppDynamicsApple
#347Top K Frequent ElementsMediumarrayNeetCodeAMDAdobeAmazon
#348Design Tic-Tac-ToeMediumarrayWalkCCCAirbnbAmazonApple
#349Intersection of Two ArraysEasyarrayWalkCCCAccentureAmazonApple
#359Logger Rate LimiterEasyhash tableWalkCCCAmazonAppFolioApple
#380Insert Delete GetRandom O(1)MediumarrayWalkCCCAffirmAmazonApple
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