Enterprise SaaS

LinkedIn interview questions

Grouped by topic, sorted Easy → Medium → Hard, then by LeetCode ID. Click a problem to open it on LeetCode; the chapter column links to the handbook chapter that covers it.

Problems
50
Easy
7
Medium
31
Hard
12
Mapped to chapter
28

Array

24 problems

Easy 2

605Can Place Flowersalso at:AtlassianAirbnbAmazon Also at 3 moreCiscoGoogleMeta Easy—
744Find Smallest Letter Greater Than Targetalso at:Meta Easy—

Medium 17

33Search in Rotated Sorted Array★ also at:AdobeArista NetworksAutodesk Also at 20 moreMongoDBSAPVMwareZscalerAmazonBloombergByteDanceCiscoeBayFlipkartFreshworksGoldman SachsGoogleMetaMicrosoftMyntraNaviNetflixPayPalPaytm MediumChapter
34Find First and Last Position of Element in Sorted Arrayalso at:AtlassianAirtelAmazon Also at 10 moreAppleBloombergByteDanceGoogleInstacartMetaMicrosoftNianticPayPalWise Medium—
53Maximum Subarrayalso at:AdobeArista NetworksAtlassian Also at 29 moreAutodeskSAPAirbnbAmazonAppleBloombergByteDanceCiscoDelleBayFractal AnalyticsFreshworksGoldman SachsGoogleIntelJioMeeshoMetaMicrosoftOlaPayPalPhonePeSnapSwiggyTargetTeslaVisaZomatoZoom MediumChapter
152Maximum Product Subarrayalso at:AdobeAmazonBloomberg Also at 13 moreByteDanceDelhiveryDeliverooGoogleJuspayLINEMetaMicrosoftMorgan StanleyPayPalQualcommSwiggyWayfair Medium—
200Number of Islands★ also at:AdobeAutodeskCloudflare Also at 43 moreCrowdStrikeDocuSignDropboxOktaSAPSplunkVMwareAmazonAMDAppleBloombergByteDanceCapital OneCiscoCitadelCREDDoorDasheBayFlipkartGoldman SachsGoogleIntelIntuitLyftMeeshoMetaMicrosoftOlaPayPalPhonePePinterestQualcommRedditSnapSpotifyTargetTeslaToastUberUrban CompanyWalmart Global TechZohoZomato MediumChapter
215Kth Largest Element in an Array★ also at:AdobeAutodeskSAP Also at 17 moreVMwareAmazonAppleBloombergByteDanceDeliverooeBayFlipkartFreshworksGoogleIntuitMetaMicrosoftMorgan StanleyPayPalQualcommSpotify MediumChapter
244Shortest Word Distance IIalso at:PalantireBay Medium—
256Paint Housealso at:AmazonCitadel Medium—
360Sort Transformed Arrayalso at:Google Medium—
380Insert Delete GetRandom O(1)also at:AdobeDocuSignOkta Also at 20 moreTwilioVMwareAmazonAppleBloombergCars24CiscoCitadelDoorDashGoogleIntuitMicrosoftNetflixOYORobloxSamsaraSnapUberX (Twitter)Yelp MediumChapter
528Random Pick with Weightalso at:AmazonChimeCoinbase Also at 10 moreGoogleLINEMetaMicrosoftNetflixPayPalRevolutRobloxSnapTwo Sigma Medium—
636Exclusive Time of Functionsalso at:AmazonGoogleMeta Also at 2 moreSnapVisa Medium—
698Partition to K Equal Sum Subsetsalso at:VMwareAmazonByteDance Also at 3 moreeBayGoogleMicrosoft MediumChapter
721Accounts Mergealso at:DocuSignPalantirRippling Also at 8 moreAirbnbAmazonBloombergGoogleMetaMicrosoftPhonePeSnap MediumChapter
752Open the Lockalso at:AmazonCars24Citadel Also at 3 moreDiscordMicrosoftUber MediumChapter
994Rotting Oranges★ also at:AdobeSalesforceAmazon Also at 23 moreBloombergChimeCitadelCleartripDoorDashDream11eBayFlipkartGoogleIntuitMetaMicrosoftMyntraOpenAIOYOPayPalPhonePeRakutenRobloxUberUrban CompanyZohoZoom MediumChapter
1004Max Consecutive Ones IIIalso at:AmazonBloombergGoogle Also at 4 moreLINEMetaMicrosoftSnap MediumChapter

Hard 5

84Largest Rectangle in Histogram★ also at:AdobeAmazonBloomberg Also at 11 moreCiscoDeliverooDoorDashFlipkartGoogleMetaMicrosoftMyntraNaviOYORoblox HardChapter
149Max Points on a Linealso at:AmazonCiscoCitadel Also at 3 moreGoogleMeeshoX (Twitter) HardChapter
296Best Meeting Pointalso at:DoorDashX (Twitter) Hard—
381Insert Delete GetRandom O(1) - Duplicates allowedalso at:OktaCitadelDiscord Also at 2 moreMetaYelp Hard—
827Making A Large Islandalso at:SnowflakeAirbnbAmazon Also at 6 moreDoorDashGoogleMetaMicrosoftSnapUber HardChapter

Hash Table

8 problems

Medium 4

3Longest Substring Without Repeating Charactersalso at:AdobeArista NetworksAtlassian Also at 45 moreDocuSignRipplingSalesforceSAPVMwareAirtelAmazonAMDAppleBloombergByteDanceCiscoDellDream11DuolingoeBayFlipkartFractal AnalyticsFreshworksGoogleIntelIntuitJPMorganJuspayMetaMicrosoftMorgan StanleyMyntraNetflixNVIDIAPayPalPaytmQualcommRakutenRobloxSpotifySwiggyTeslaToastUrban CompanyVisaYelpZohoZomatoZoom MediumChapter
17Letter Combinations of a Phone Number★ also at:DropboxEpic SystemsTwilio Also at 15 moreVMwareAmazonAppleBloombergChimeCiscoCitadelDeliverooeBayGoogleLyftMetaMicrosoftPhonePeTesla MediumChapter
146LRU Cache★ also at:AdobeArista NetworksAutodesk Also at 59 moreCloudflareDocuSignMongoDBOktaPalantirRipplingSalesforceSAPSnowflakeSplunkTwilioVMwareZscalerAmazonAMDAppleBloombergByteDanceCiscoCitadelCREDDelhiveryDoorDasheBayExpediaFlipkartGoogleGrowwIntelIntuitJane StreetJPMorganLINELyftMetaMicrosoftMorgan StanleyMyntraNetflixNianticNVIDIANykaaOlaPayPalPhonePeQualcommRakutenRazorpayRedditSnapSpotifySwiggyTargetTeslaToastUberVisaX (Twitter)Zoom MediumChapter
187Repeated DNA Sequencesalso at:AmazonBloombergMicrosoft Also at 1 moreTesla MediumChapter

Hard 4

76Minimum Window Substringalso at:AdobeSAPVMware Also at 16 moreAirbnbAmazonBloombergByteDanceCiscoDeliverooeBayGoldman SachsGoogleInMobiLyftMeeshoMetaMicrosoftSnapSwiggy HardChapter
127Word Ladderalso at:DocuSignOktaVMware Also at 15 moreZscalerAmazonAppleBloombergFlipkartGoogleLyftMetaMicrosoftPhonePeRedditSnapSpotifyUberYelp HardChapter
432All O`one Data Structurealso at:AtlassianAirbnbAmazon Also at 1 moreApple HardChapter
460LFU Cache★ also at:AdobeRipplingSalesforce Also at 11 moreVMwareAmazonCitadelDiscordDoorDashExpediaGoogleMicrosoftPayPalWalmart Global TechZomato HardChapter

Tree

5 problems

Easy 3

100Same Treealso at:SAPAmazonBloomberg Also at 6 moreGoogleMetaMicrosoftRedditWiseZoom EasyChapter
104Maximum Depth of Binary Tree★ also at:AdobeArista NetworksAmazon Also at 5 moreByteDanceGoogleMetaMicrosoftQualcomm EasyChapter
617Merge Two Binary Treesalso at:AdobeMongoDB Easy—

Medium 2

156Binary Tree Upside DownMedium—
366Find Leaves of Binary Treealso at:DiscordDuolingoeBay Also at 1 moreFlipkart Medium—

Depth-First Search

3 problems

Medium 3

210Course Schedule IIalso at:Arista NetworksDatabricksMongoDB Also at 24 morePalantirSalesforceSnowflakeAmazonAppleBloombergCars24CitadelCleartripCoinbaseCure.fitDoorDashFlipkartGoogleIntuitMetaMicrosoftNetflixQualcommRobloxSnapTeslaUberUrban Company MediumChapter
339Nested List Weight Sumalso at:MetaSnap Medium—
886Possible Bipartitionalso at:AmazonMeesho MediumChapter

String

3 problems

Easy 1

20Valid Parentheses★ also at:AdobeAutodeskCrowdStrike Also at 36 moreEpic SystemsSAPSplunkTwilioVMwareAirbnbAmazonBloombergCiscoCoinDCXDelleBayFlipkartFreshworksGoogleGrowwIntelIntuitJane StreetJioLyftMetaMicrosoftNetflixNVIDIAPayPalPaytmPhonePeQualcommRobloxSpotifySwiggyTargetTeslaToastX (Twitter) EasyChapter

Medium 1

516Longest Palindromic Subsequencealso at:AmazonGoogleMicrosoft MediumChapter

Hard 1

65Valid Numberalso at:AdobeAmazonInstacart Also at 1 moreMeta Hard—

Misc

7 problems

Easy 1

206Reverse Linked List★ also at:AdobeSAPVMware Also at 19 moreAmazonAppleBloombergByteDanceCiscoeBayGoogleGrowwJioLINEMetaMicrosoftPaytmQualcommSnapSpotifyTeslaX (Twitter)Yelp EasyChapter

Medium 4

277Find the Celebrityalso at:VMwareAppleMicrosoft Also at 1 moreToast Medium—
319Bulb Switcheralso at:AmazonGoogle Medium—
364Nested List Weight Sum IIMedium—
1188Design Bounded Blocking Queuealso at:BloombergTesla Medium—

Hard 2

272Closest Binary Search Tree Value IIHard—
489Robot Room Cleaneralso at:CitadelMetaTwo Sigma Hard—