Problem Pattern Frequency

Difficulty: All Pattern : All Company : All Clear Filters

Title	Solutions	Difficulty	Patterns	Companies
Contains Duplicate		Easy	Arrays	GoogleAmazonMetaMicrosoftBloombergtcsNetflixIBMVisa
Missing Number		Easy	ArraysBit Manipulation	AmazonMicrosoftGoogleMetaGoldman SachsBloombergArista NetworksIBM
Find All Numbers Disappeared in an Array		Easy	Arrays	GoogleAmazon
Single Number		Easy	ArraysBit Manipulation	GoogleAmazonMicrosoftMetatcsBloomberg
Product of Array Except Self		Medium	Arrays	AmazonMetaGoogleMicrosoftGoldman SachsApplePayPalYandexAsanaBloombergNvidiaZohoThousandEyesUberAdobeFractal AnalyticsZS Associates
Find the Duplicate Number		Medium	ArraysBinary SearchTwo Pointers	AmazonGoogleMicrosoftBloombergMetaCitadelGoldman SachsNvidiaAnduril
Find All Duplicates in an Array		Medium	Arrays	GoogleMicrosoftAmazonBloombergMeta
Set Matrix Zeroes		Medium	Arrays	GoogleMetaAmazonBloombergMicrosoftWalmart LabsNutanixOracleAppleeBayJ.P. MorganInfosysNvidiaAutodesk
Spiral Matrix		Medium	Arrays	GoogleAmazonMicrosoftCiscoMetaCapital OneBloombergTikTokjosh technologyUberEpic SystemsAppleOracleAndurileBayYahooZohoGoldman SachsPayPalRobloxtcsNetAppMorgan StanleyRBC
Rotate Image		Medium	Arrays	GoogleMicrosoftAmazonMetaJ.P. MorganBloombergUberAppleCiscoFlipkartRobloxZohoAT&TCapital OneIBMInfosysRakuten
Word Search		Medium	Backtracking	AmazonBloombergGoogleUberTikTokFaireNetflixMetaKaratGoldman SachsPayPalSalesforceMicrosoftOracleCiscoEpic SystemsAtlassianIBMSnapAppleGrammarly
First Missing Positive		Hard	Arrays	AmazonGoogleMicrosoftMetaBloombergOracleZomatoTeslaNutanixGoldman SachsServiceNowMakeMyTripMyntraGeneral MotorsCognizant
Longest Consecutive Sequence		Medium	Arrays	GoogleAmazonMetaMicrosoftBloombergAppleIBMGoldman SachsWalmart LabsTikTokUberOracleOktaTeslaCiscoDeloitte
Letter Case Permutation		Medium	Backtracking	Meta
Subsets		Medium	Backtracking	MetaGoogleBloombergAmazonMicrosoftTikTokOraclePayPalWix
Subsets II		Medium	Backtracking	GoogleMetaAmazonMicrosoftBloomberg
Permutations		Medium	Backtracking	GoogleAmazonMicrosoftMetaAppleTikTokBloombergArista NetworksCitadelUberBooking.comQualcommAmerican Express
Permutations II		Medium	Backtracking	MicrosoftTikTokMetaAmazonGoogleApple
Combinations		Medium	Backtracking	GoogleMetaAmazonMicrosoft
Combination Sum		Medium	Backtracking	AmazonGoogleMicrosoftTikTokAirbnbBloombergYahooWalmart LabsLinkedInByteDanceMetaConfluentCitadelHPE
Combination Sum II		Medium	Backtracking	GoogleMetaLinkedInOracleAmazonBloombergRakutenMicrosoftTikTok
Combination Sum III		Medium	Backtracking	GoogleAmazonBloomberg
Generate Parentheses		Medium	Backtracking	AmazonGoogleMetaMicrosoftAppleBloombergZohoTikTokWalmart LabsServiceNowOracleInfosysGrammarlyExpediaYandextcsEPAM Systems
Target Sum		Medium	BacktrackingDFSDynamic Programming	GoogleAmazonMicrosoftMetaBloombergPinterestMyntra
Palindrome Partitioning		Medium	Backtracking	AmazonGoogleMicrosoftBloombergMeta
Letter Combinations of a Phone Number		Medium	Backtracking	GoogleAmazonMicrosoftLinkedInMetaAppleEpic SystemsOracleAccentureUberBloombergGoldman SachsDE ShawFlexport
Generalized Abbreviation		Medium	Backtracking
Sudoku Solver		Hard	Backtracking	GoogleAmazonBloombergMicrosoftConfluentMeta
N-Queens		Hard	Backtracking	GoogleAmazonMicrosoftOracleBloombergGoldman SachsZohoMetaTikToktcs
Climbing Stairs		Easy	Dynamic Programming	GoogleAmazonMicrosoftMetaGrammarlyBloombergZohoAgodaPayPalQualcomm
House Robber		Medium	Dynamic Programming	AmazonGoogleTikTokMicrosoftDatabricksBloombergCiscoUberMetaGoldman SachsPhonePetcs
Best Time to Buy and Sell Stock		Easy	Greedy	MetaAmazonGoogleMicrosoftAppleBloombergIBMCitadelAgodaMorgan StanleySalesforceZooxMillenniumSAPTeslatcsTikTokPayPalAdobeGoldman SachsUberInfosysJ.P. MorganNvidiaYandexAtlassianVisaZohoAccentureDeloitteAkamaiToastSigmoidCiscoDeutsche BankCapital OneByteDanceBank of AmericaRemitlyMastercardEPAM SystemsTuringAmerican ExpressOzon
Maximum Subarray		Medium	Dynamic Programming	AmazonGoogleMicrosoftMetaBloombergLinkedInAppleNvidiaCiscoGoldman SachsUpstartSquarepoint CapitalOracleVisaPayPaltcsTikTokTekionArista NetworksZomatoZetaIntelCoupangInfosysAccentureEPAM SystemsTuringVimeoCriteo
Range Sum Query - Immutable		Easy	Dynamic Programming	MetaGoogleAmazonBloomberg
House Robber II		Medium	Dynamic Programming	GoogleAmazonDatabricksMetaMicrosoftLinkedInTikTokDocusign
Coin Change		Medium	Dynamic Programming	AmazonMicrosoftPinterestPayPalGoogleMetaTikTokDatadogOracleIntuitBloombergWalmart LabsGoldman SachsServiceNowMastercardPhonePeAffirmSalesforce
Maximum Product Subarray		Medium	Dynamic Programming	GoogleAmazonLinkedIntcsMicrosoftMetaBloombergAdobeDE ShawGoldman SachsSiemens
Longest Increasing Subsequence		Medium	Dynamic Programming	GoogleAmazonMicrosoftBloombergMetaPayPalTikTokBlockWalmart LabsOracleSquarepoint CapitalHuaweiAccentureYandex
Longest Palindromic Substring		Medium	Dynamic Programming	AmazonGoogleMetaMicrosoftBloombergTikTokIBMYandexWalmart LabsSAPEPAM SystemsDeloitteCognizanteBayVisaCiscoGoldman SachsOracleZohoPhonePeCitadelHSBCAppleSalesforcetcsSoftwirepersistent systemsathenahealth
Word Break		Medium	Dynamic Programming	AmazonGoogleMetaMicrosoftBloombergMongoDBNetflixUberWalmart LabsTikTokMillenniumLinkedInIntuitArista Networks
Combination Sum IV		Medium	Dynamic Programming	GoogleAmazonMeta
Decode Ways		Medium	Dynamic Programming	AmazonMetaGoogleGoldman SachsLyftSnapOscar HealthAdobeWalmart Labs
Unique Paths		Medium	Dynamic Programming	GoogleAmazonMetaBloombergMicrosoftGoldman SachsFlipkartVisa
Jump Game		Medium	Dynamic ProgrammingGreedy	AmazonGoogleBloombergMetaMicrosoftOracleAdobeZohoTikTokCognizantPayPalDoorDashNvidiaHashedInNikeNavi
Palindromic Substrings		Medium	Dynamic Programming	MetaPure StorageAmazonSalesforceGoogleMicrosoftAndurilOracleCitadelWalmart LabsPayPalEpic SystemsNetskope
Number of Longest Increasing Subsequence		Medium	Dynamic Programming	Google
Partition Equal Subset Sum		Medium	Dynamic Programming	GoogleAmazonMicrosoftMetaBloombergtcsTikTok
Partition to K Equal Sum Subsets		Medium	Dynamic Programming	LinkedInGoogleMeta
Best Time to Buy and Sell Stock with Cooldown		Medium	Dynamic Programming	GoogleTikTok
Counting Bits		Easy	Dynamic ProgrammingBit Manipulation	GoogleMicrosoftMetaAmazonBloomberg
Linked List Cycle		Easy	Fast & Slow Pointers	GoogleAmazonMicrosoftBloombergMetaGoldman Sachs
Middle of the Linked List		Easy	Fast & Slow Pointers	GoogleAmazonMicrosofttcsAppleMetaBloombergNvidia
Reverse Linked List		Easy	In-place reversal of a linked list	AmazonGoogleMicrosoftAppleBloombergTikTokMetaGoldman SachsNvidiaOracleVisaSAPQualcommEPAM Systems
Palindrome Linked List		Easy	Fast & Slow Pointers	GoogleMetaAmazonMicrosoftBloomberg
Remove Linked List Elements		Easy	Fast & Slow Pointers	BloombergGoogleAmazonMicrosoftMeta
Remove Duplicates from Sorted List		Easy	Fast & Slow Pointers	GoogleAmazonMicrosoftOracleBloombergMeta
Linked List Cycle II		Medium	Fast & Slow Pointers	GoogleAmazonMicrosoftAmerican Express
Add Two Numbers		Medium	Fast & Slow Pointers	GoogleAmazonMetaMicrosoftBloombergCiscoNvidiaUberGoldman SachsYandexOracleAppleByteDance
Remove Nth Node From End of List		Medium	Fast & Slow Pointers	MetaGoogleAmazonMicrosoftBloombergYandextcsAccentureApplejosh technologyTinkoffOracleTikTok
Sort List		Medium	Fast & Slow Pointers	GoogleAmazonLyftMicrosoftBloombergMetaOracleByteDance
Reorder List		Medium	Fast & Slow Pointers	GoogleBloombergMetaAmazonMicrosoftTikTokArista Networks
Pacific Atlantic Water Flow		Medium	BFSDFS	AmazonGoogleAdobeUrban CompanyMetaNutanix
Number of Islands		Medium	BFSDFSUnion Find	AmazonBloombergGoogleMicrosoftTikTokLinkedInMetaAndurilUberAppleSnapYandexOracleGoldman SachsWalmart LabseBayPayPalQualcommSamsungServiceNowDocusignZohoNvidiaSalesforceVisaCitadelTeslaWixCloudflareSiemensIBMCiscoByteDanceHiveCapital OneWells FargoDoorDashSAPHuaweiAccentureBitGoCrowdStrikeRivianSquarepoint CapitalGrammarlyHashedInComcastBarclays
Graph Valid Tree		Medium	BFSDFSGraphUnion Find	GoogleLinkedInMetaMicrosoft
Number of Connected Components in an Undirected Graph		Medium	BFSDFSGraphUnion Find	AmazonGeneral MotorsLinkedInGoogleMeta
Reverse Linked List II		Medium	In-place reversal of a linked list	GoogleMicrosoftAmazonBloombergMetaOracleByteDanceTikTokNvidiaNutanix
Rotate List		Medium	In-place reversal of a linked list	BloombergAmazonGoogleMetajosh technologyLinkedInMicrosoft
Swap Nodes in Pairs		Medium	In-place reversal of a linked list	BloombergGoogleMicrosoftAmazonTikTokPayPalYandex
Odd Even Linked List		Medium	In-place reversal of a linked list	AmazonGoogleMetaBloombergMicrosofttcsZoho
Reverse Nodes in k-Group		Hard	In-place reversal of a linked list	AmazonMicrosoftGoogleBloombergSalesforceMetaMathWorksUberGoldman SachsCiscoTikTokjosh technologyCadence
Merge Two Sorted Lists		Easy	Two Pointers	AmazonGoogleMetaMicrosoftBloombergAppleHubspotYandexjosh technologySquarespaceOracleSalesforceZohoSnowflakeTikTokRipplingPalo Alto Networks
Kth Smallest Element in a Sorted Matrix		Medium	Binary SearchHeap	MetaAmazonGooglePhonePeAppleOracle
Find K Pairs with Smallest Sums		Medium	Heap	AmazonLinkedInMicrosoftMetaGoogle
Merge k Sorted Lists		Hard	Heap	MetaAmazonMicrosoftGoogleAppleOracleTikTokSnowflakeBloombergNvidiaYandexAndurilDeloitteRipplingUberLinkedIneBayTwo SigmaWalmart LabsSalesforceSamsungDoorDash
Smallest Range Covering Elements from K Lists		Hard	Heap	AmazonLinkedInGoogleMeta
Meeting Rooms		Easy	Intervals	MicrosoftMetaOracleGoogleAmazonTikTok
Merge Intervals		Medium	Intervals	MetaAmazonGoogleMicrosoftBloombergAppleHubspotAtlassianZohoGrammarlyGoldman SachsIXLWalmart LabsAdobeTikTokVisaNetflixAndurilTeslaIBMSalesforcePayPalCiscoPalantir TechnologiesLinkedInUberOracleSAPYandexCapital OneTwitchByteDanceCitadelAccentureGrubhubNutanixSnapGoDaddyeBayNvidiaServiceNowExpediatcsRobloxJ.P. MorganTescoOzonNextdoorPatreonTuringCrowdStrikeInfosysMoveworksSquarespaceRippleWiproZeta
Interval List Intersections		Medium	Intervals	MetaYandexGoogleAmazonMicrosoftVerkada
Non-overlapping Intervals		Medium	Intervals	GoogleAmazonMetaVerkadaBloombergGoldman Sachs
Meeting Rooms II		Medium	HeapIntervals	GoogleAmazonMetaAtlassianTikTokBloombergMicrosoftUberJ.P. MorganOracleNetflixSnapCitadelCiscoHubspotAppleIBMWorldQuantSnowflakeAndurilTwo SigmaLime
Task Scheduler		Medium	GreedyHeap	RobloxGoogleAmazonOracleSnowflakeMicrosoftAppleLinkedInZetaMathWorksMetaUberRubrikGoldman Sachs
Minimum Number of Arrows to Burst Balloons		Medium	Greedy	TikTokAmazonZohoGoogleGoldman Sachs
Insert Interval		Medium	Intervals	GoogleAmazonMetaUberMicrosoftBloombergPhonePe
Employee Free Time		Hard	HeapGreedy	GoogleCitadelApple
Binary Search		Easy	Binary Search	GoogleAmazonMicrosoftBloombergMetaPure Storage
Find Smallest Letter Greater Than Target		Easy	Binary Search	LinkedInGoogleBloombergMeta
Peak Index in a Mountain Array		Medium	Binary Search	MetaGoogleAmazonBloombergMicrosoft
Find Minimum in Rotated Sorted Array		Medium	Binary Search	Goldman SachsGoogleAmazonMicrosoftUberMetaBloombergYandexTikTok
Find Peak Element		Medium	Binary Search	MetaAmazonBloombergGoogleMicrosoftGoldman SachsAppleYahooeBayIXLSamsungTikTokUrban CompanyByteDanceOracleVisaWaymo
Search in Rotated Sorted Array		Medium	Binary Search	GoogleAmazonMicrosoftMetaBloombergTikTokGrammarlyWalmart LabsNvidiaGoldman SachsYandexAppleF5LinkedInOracleCiscoArista NetworkstcsCriteoAutodeskPalo Alto NetworksFlipkartSnapSamsungIBMSalesforceNutanixByteDancePaytmZohoAnduril
Search in Rotated Sorted Array II		Medium	Binary Search	MetaBloombergGoogleAmazontcsWalmart Labs
Search a 2D Matrix		Medium	Binary Search	AmazonGoogleMicrosoftMetaBloombergAdobeGoldman SachsTikTokOracleAppleNutanix
Search a 2D Matrix II		Medium	Binary Search	AmazonMetaGoogleMicrosoftBloombergMotivePayPalOracle
Find K Closest Elements		Medium	Binary Search	YandexAmazonMetaGoogleCoupangMicrosoftLinkedInAppleDoorDashFlipkart
Count of Range Sum		Hard	Binary Search	Amazon
Minimum Size Subarray Sum		Medium	Sliding Window	DoorDashMetaAmazonGoogleMicrosoftTikTokBloombergOracle
Fruit Into Baskets		Medium	Sliding Window	AmazonGoogleMetaMicrosoft
Permutation in String		Medium	Sliding Window	GoogleMicrosoftAmazonYandexBloombergDatabricksMetaCisco
Longest Repeating Character Replacement		Medium	Sliding Window	GoogleAmazonMetaMicrosoftBloombergGoldman SachsAdobeYandexServiceNowUiPathByteDance
Sliding Window Maximum		Hard	Sliding Window	GoogleAmazonMetaMicrosoftJ.P. MorganBloombergOracleTikTokGoldman SachsDE ShawLINEJuspayUberCitadelIBMCoupangDoorDashServiceNowAppleNutanixSalesforcePalo Alto NetworksZeta
Longest Substring Without Repeating Characters		Medium	Sliding Window	AmazonGoogleBloombergMetaMicrosoftTikTokYandexVisaOracleTuringServiceNowGoldman SachsZohoNvidiaAppleNetflixInfosysPayPalHCLPalo Alto NetworksCiscoWalmart LabsSalesforceSpotifyJ.P. MorganIBMAccoliteEPAM SystemsNetskopeZomatoAdobeLinkedInSAPRobloxDocusignCoupangPaytmtcsAccentureCapgeminipersistent systemsVirtusaDellMAQ SoftwareComcastFreechargeKPMG
Minimum Number of K Consecutive Bit Flips		Hard	Sliding Window	Google
Count Unique Characters of All Substrings of a Given String		Hard	Sliding Window	Amazon
Minimum Window Substring		Hard	Sliding Window	MetaAmazonGoogleSnowflakeLyftLinkedInBloombergSnapAdobeTikTokYandexUberSalesforceInfosysMicrosoftZetaSoFiMeesho
Substring with Concatenation of All Words		Hard	Sliding Window	GoogleMetaAmazonBloombergMicrosoft
Kth Smallest Element in a BST		Medium	DFS	GoogleUberMicrosoftAmazonMetaOracleBloomberg
K Closest Points to Origin		Medium	Heap	MetaAmazonAsanaGoogleLinkedInAppleMicrosoftSalesforce
Top K Frequent Elements		Medium	Heap	MetaAmazonGoogleAppleMicrosoftTikTokOracleBloombergGoldman SachsYahooZohoAdobeSalesforceUberWalmart LabsNvidiaDisneyRokuRobinhoodRipplingAtlassianNutanixTwilioByteDanceTeslaServiceNowJ.P. MorganSnowflakeSoFiMicrostrategy
Sort Characters By Frequency		Medium	Heap	MetaGoogleIBMAmazonBloombergMicrosoftFlipkartEPAM Systems
Kth Largest Element in an Array		Medium	HeapQuickSelect	MetaGoogleAmazonLinkedInTikTokBloombergMicrosoftOracleMorgan StanleyGoldman SachsAppleSpotifyVisaSalesforceUberWalmart LabsCoupang
Reorganize String		Medium	GreedyHeap	AmazonRobloxGoogleMetaDE ShawZohoGoldman SachsAudible
Rearrange String k Distance Apart		Hard	GreedyHeap	Amazon
Course Schedule III		Hard	GreedyHeap	Amazon
Maximum Frequency Stack		Hard	Bucket SortHeap	AmazonUberAppleMicrosoftNutanix
Course Schedule		Medium	BFSDFSGraphTopological Sort	AmazonMetaGoogleTikTokSnowflakeMicrosoftBloombergAppleRobloxCoupangSnapByteDanceAndurilNordstromOracleAdobeDoorDashZomatoSwiggyIXL
Course Schedule II		Medium	BFSDFSGraphTopological Sort	AmazonRobloxGoogleMetaSalesforceMicrosoftTikTokSnowflakeSnapAppleUberBloombergNetflixCitadelLinkedInAndurilArista NetworksRemitlyOracleIntuitWalmart LabsGoldman SachsFlipkartMongoDBQualcomm
Minimum Height Trees		Medium	BFSGraphTopological Sort	GoogleSplunk
Alien Dictionary		Hard	GraphTopological Sort	UberMetaGoogleAmazonTikTokAppleMicrosoftCoupang
Sequence Reconstruction		Medium	GraphTopological Sort	Google
Binary Tree Level Order Traversal II		Medium	BFS	GoogleMeta
Average of Levels in Binary Tree		Easy	BFS	MetaGoogle
Minimum Depth of Binary Tree		Easy	BFSDFS	MetaGoogleAmazon
Binary Tree Level Order Traversal		Medium	BFS	AmazonMetaBloombergMicrosoftGoogleOraclePalo Alto NetworksAppleYandex
Binary Tree Zigzag Level Order Traversal		Medium	BFS	AmazonGoogleMicrosoftMetaOracleNutanixCitadelBloombergGoldman SachsSigmoidAdobeWalmart LabsYandexTikTok
Binary Tree Right Side View		Medium	BFSDFS	MetaAmazonYandexOracleGoogleMicrosoftBloombergUberServiceNow
All Nodes Distance K in Binary Tree		Medium	BFSDFS	MetaAmazonOktaSalesforceTikTokGoogleMicrosoft
Same Tree		Easy	DFS	AmazonGoogleMetaBloombergMicrosoftApple
Path Sum		Easy	DFS	AmazonMicrosoftMetaGoogleGoldman Sachs
Maximum Depth of Binary Tree		Easy	DFS	AmazonGoogleArista NetworksLinkedInMicrosoftBloombergAvitoMeta
Diameter of Binary Tree		Easy	DFS	MetaAmazonGoogleBloombergMicrosoftOracleTikTokVerkada
Merge Two Binary Trees		Easy	DFS	AmazonGoogleMetajosh technologyLinkedIn
Lowest Common Ancestor of a Binary Search Tree		Medium	DFS	LinkedInAmazonMetaBloombergGoogleMicrosoft
Subtree of Another Tree		Easy	DFS	AmazonMetaGoogle
Invert Binary Tree		Easy	DFS	GoogleAmazonBloombergMetaPalo Alto NetworksMicrosoft
Path Sum II		Medium	DFS	MetaAmazonMicrosoftTikTokOracleGoogle
Path Sum III		Medium	DFS	GoogleMicrosoftAmazonMetaMillenniumBloombergSalesforce
Lowest Common Ancestor of a Binary Tree		Medium	DFS	MetaAmazonAtlassianMicrosoftLinkedInGoogleAppleTikTokAdobeYandexOracleBloombergIntuit
Maximum Binary Tree		Medium	DFS
Maximum Width of Binary Tree		Medium	DFS	BloombergMetaAmazonGoogleMicrosoftByteDance
Construct Binary Tree from Preorder and Inorder Traversal		Medium	DFS	AmazonGoogleTikTokBloombergMicrosoftSnowflake
Validate Binary Search Tree		Medium	DFS	AmazonBloombergMetaGoogleMicrosoftCitadelOracleSalesforce
Implement Trie (Prefix Tree)		Medium	DesignTrie	GoogleMicrosoftAmazonMongoDBGeneral MotorsMetaRobloxAppleDocusignOracleSnowflakeTikTokGrammarly
Binary Tree Maximum Path Sum		Hard	DFS	DoorDashAmazonGoogleMetaBloombergOracleYandexTikTokSalesforceNutanixMicrosoftSnap
Serialize and Deserialize Binary Tree		Hard	Design	AmazonGoogleLinkedInMicrosoftTikTokMetaAppleNutanixUberCitadelOracleQuoraDoorDashtcs
Word Search II		Hard	DFSTrie	CiscoAmazonTwo SigmaGoogleTikTokSnowflakeDoorDashMicrosoftSnapUberBloombergMetaAurora
Find Median from Data Stream		Hard	Heap	AmazonMetaMicrosoftGoldman SachsOracleAndurilGoogleIXLUberTinderCoupangAppleBloombergFlipkartCitadelCohesityIntuitWalmart LabsSplunkTikTokPayPalVisaSnowflakeOktaKLA
Sliding Window Median		Hard	Heap	MetaSpotifyGoogleAmazonMicrosoft
Two Sum		Easy	Two Pointers	GoogleAmazonMicrosoftMetaBloombergAppleGoldman SachsWalmart LabsOracleNvidiaZohoCognizantComcastIntelDeloitteSAPSpotifyWiproAmerican ExpresstcsHCLSnowflakeDoorDashHubspotPwcMorgan StanleyYandexIBMJ.P. MorganVisaInfosysEPAM SystemsAccentureCapgeminiTiger AnalyticsTikTokSynopsysAirbus SELinkedInSamsungUberPayPalWestern DigitalSalesforceFlipkartQualcommSplunkAccolitepersistent systemsTinkoffTekionCriteoToastPhonePe
Squares of a Sorted Array		Easy	Two Pointers	MetaUberAmazonGoogleInstacartYandex
Backspace String Compare		Easy	Two Pointers	AmazonMicrostrategyMetaMicrosoftGoldman SachsAgoda
3Sum		Medium	Two Pointers	GoogleAmazonMicrosoftMetaBloombergVisaTikTokOracletcsCloudflareSalesforceAppleWalmart LabsZohoIBMAmerican ExpressAgodaTuringVimeoMeesho
3Sum Closest		Medium	Two Pointers	GoogleAmazonMetaMicrosoftBloombergDream11Flipkart
Subarray Product Less Than K		Medium	Two Pointers	SalesforceAppleAmazonSquarepoint CapitalAirbnbBloombergGoogleSamsungMetaAgoda
Sort Colors		Medium	Two Pointers	GoogleMetaAmazonMicrosoftOracleMorgan StanleytcsBloombergWalmart LabsSalesforceCiscoVisaSamsungCapgeminiSliceeBaySwiggyTargetAutodesk
Trapping Rain Water		Hard	Two Pointers	Goldman SachsAmazonGoogleBloombergMicrosoftMetaZopsmartAdobeZohoAppleWalmart LabsServiceNowDE ShawTeslaSnowflakeMedia.netSalesforceVisaUberSamsungFlipkartTikTokPaytmEPAM SystemsTekiontcsQualcommThousandEyesOracleNutanixExpediaPhonePeHashedInGrammarlyZetaRoblox
Container With Most Water		Medium	Two Pointers	AmazonGoogleMetaMicrosoftBloombergGoldman SachsOracleSAPCapital OneServiceNowFlipkartZohoTikTokDeloitteExpediaTeslaMyntraHashedIn
Longest Word in Dictionary		Medium	Trie
Index Pairs of a String		Easy	Trie
Maximum XOR of Two Numbers in an Array		Medium	Trie	GoogleAmazon
Concatenated Words		Hard	Trie	Amazon
Prefix and Suffix Search		Hard	Trie
Palindrome Pairs		Hard	Trie	AmazonGoldman SachsAirbnb
Design Search Autocomplete System		Hard	Trie	PinterestGoogleRobloxBloombergMicrosoftAmazonUberCiscoMongoDB
Word Squares		Hard	Trie
Sort Items by Groups Respecting Dependencies		Hard	DFSGraphTopological Sort	AmazonBloomberg
Median of Two Sorted Arrays		Hard	Binary Search	GoogleAmazonMicrosoftGoldman SachsMetaBloombergRipplingWalmart LabsAppleAccentureCognizantYandexOraclePalo Alto NetworksOktaAutodesk
Majority Element		Easy	Sorting	GoogleAmazonBloombergMetaMicrosofttcsQualcommOracleAccentureZohoAutodesk
Convert 1D Array Into 2D Array		Easy	Arrays
Move Zeroes		Easy	ArraysTwo Pointers	GoogleMicrosoftAmazonMetaAppleBloombergYandexOracleNetAppSAPCapgeminiEPAM SystemsUberPayPalCiscoServiceNowGoldman Sachs
Is Subsequence		Easy	Two Pointers	GoogleAmazonYandexMetaMicrosoftTinkoff
Binary Tree Paths		Easy	DFSBacktracking	Capital OneMetaAmazonGoogle
Factor Combinations		Medium	ArraysBacktracking	LinkedIn
Split a String Into the Max Number of Unique Substrings		Medium	Backtracking
Maximum Average Subarray I		Easy	Sliding Window	MetaGoogleAmazonMicrosoftGoldman Sachs
Gas Station		Medium	Greedy	MicrosoftGoogleBloombergAmazonFlipkartInfosysMetaOracleBitGoPhonePeZohoSalesforceTikTokServiceNow