PrepCode

Interview Problem Catalogue

3,396 problems with verified company tags & open-source solutions

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Blind 75

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The 75 definitive coding interview questions covering all foundational patterns.

Easy: 0/19Med: 0/49Hard: 0/7
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Showing 75 questions
#1Two SumEasyarrayNeetCodeAMDAccentureAccolite
#3Longest Substring Without Repeating CharactersMediumhash tableNeetCodeAccentureAccoliteAdobe
#5Longest Palindromic SubstringMediumtwo pointersNeetCodeAccentureAccoliteAdobe
#11Container With Most WaterMediumarrayNeetCodeAccentureAccoliteAdobe
#153SumMediumarrayNeetCodeAMDAccentureAdobe
#20Valid ParenthesesEasystringNeetCodeAMDAccoliteAdobe
#23Merge k Sorted ListsHardlinked listNeetCodeAirbnbAmazonAmerican Express
#33Search in Rotated Sorted ArrayMediumarrayNeetCodeAdobeAmazonAnduril
#49Group AnagramsMediumarrayNeetCodeAccentureAccoliteAdobe
#53Maximum SubarrayMediumarrayNeetCodeAccentureAccoliteAmazon
#54Spiral MatrixMediumarrayNeetCodeAMDAdobeAkamai
#55Jump GameMediumarrayNeetCodeAdobeAgodaAmazon
#56Merge IntervalsMediumarrayNeetCodeAMDAccentureAdobe
#70Climbing StairsEasymathNeetCodeAMDAccentureAccolite
#76Minimum Window SubstringHardhash tableNeetCodeAdobeAirbnbAmazon
#79Word SearchMediumarrayNeetCodeAccentureAmazonApple
#104Maximum Depth of Binary TreeEasytreeNeetCodeAccentureAmazonApple
#121Best Time to Buy and Sell StockEasyarrayNeetCodeAccentureAdobeAgoda
#124Binary Tree Maximum Path SumHarddynamic programmingNeetCodeAdobeAmazonApple
#125Valid PalindromeEasytwo pointersNeetCodeAccentureAdobeAltimetrik
#128Longest Consecutive SequenceMediumarrayNeetCodeAdobeAmazonApple
#133Clone GraphMediumhash tableNeetCodeAmazonAppleBloomberg
#139Word BreakMediumarrayNeetCodeAmazonAppleArista Networks
#141Linked List CycleEasyhash tableNeetCodeAmazonAutodeskBloomberg
#152Maximum Product SubarrayMediumarrayNeetCodeAdobeAmazonBloomberg
#198House RobberMediumarrayNeetCodeAdobeAgodaAirbnb
#200Number of IslandsMediumarrayNeetCodeAMDAccentureAdobe
#206Reverse Linked ListEasylinked listNeetCodeAdobeAmazonApple
#207Course ScheduleMediumdepth first searchNeetCodeAdobeAkamaiAmazon
#208Implement Trie (Prefix Tree)Mediumhash tableNeetCodeAmazonAppleBloomberg
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