Enterprise SaaS

Cloudflare 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
11
Easy
1
Medium
8
Hard
2
Mapped to chapter
9

Array

6 problems

Medium 6

153Sumalso at:AdobeAtlassianAutodesk Also at 31 moreSplunkVMwareAmazonAMDAppleBloombergByteDanceCiscoCitadelDream11eBayFlipkartGoldman SachsGoogleIntuitMeeshoMetaMicrosoftMorgan StanleyMyntraNVIDIAPayPalPaytmPhonePeQualcommTeslaVisaWalmart Global TechZohoZomatoZoom MediumChapter
184Sumalso at:AdobeAmazonApple Also at 6 moreBloombergDoorDashGoogleMetaMicrosoftOYO Medium—
200Number of Islands★ also at:AdobeAutodeskCrowdStrike Also at 43 moreDocuSignDropboxLinkedInOktaSAPSplunkVMwareAmazonAMDAppleBloombergByteDanceCapital OneCiscoCitadelCREDDoorDasheBayFlipkartGoldman SachsGoogleIntelIntuitLyftMeeshoMetaMicrosoftOlaPayPalPhonePePinterestQualcommRedditSnapSpotifyTargetTeslaToastUberUrban CompanyWalmart Global TechZohoZomato MediumChapter
362Design Hit Counter★ also at:AtlassianDatabricksDropbox Also at 9 moreAppleBloombergDeliverooGoogleMetaOpenAIRedditRobloxUber MediumChapter
622Design Circular Queuealso at:DatadogSplunkAmazon Also at 8 moreAppleCitadelCoinbaseGoogleIntuitMicrosoftQualcommTesla MediumChapter
1381Design a Stack With Increment Operationalso at:AmazonGoogle MediumChapter

Misc

5 problems

Easy 1

359Logger Rate Limiteralso at:AtlassianDocuSignAmazon Also at 6 moreDeliverooGoogleIntuitNetflixRedditRoblox EasyChapter

Medium 2

146LRU Cache★ also at:AdobeArista NetworksAutodesk Also at 59 moreDocuSignLinkedInMongoDBOktaPalantirRipplingSalesforceSAPSnowflakeSplunkTwilioVMwareZscalerAmazonAMDAppleBloombergByteDanceCiscoCitadelCREDDelhiveryDoorDasheBayExpediaFlipkartGoogleGrowwIntelIntuitJane StreetJPMorganLINELyftMetaMicrosoftMorgan StanleyMyntraNetflixNianticNVIDIANykaaOlaPayPalPhonePeQualcommRakutenRazorpayRedditSnapSpotifySwiggyTargetTeslaToastUberVisaX (Twitter)Zoom MediumChapter
207Course Schedule★ also at:CrowdStrikeSalesforceSnowflake Also at 22 moreAmazonAppleByteDanceCars24CitadelDoorDasheBayFlipkartGoogleIntuitMetaMicrosoftPayPalRobloxSnapSwiggyTargetToastUberWalmart Global TechYelpZomato MediumChapter

Hard 2

23Merge k Sorted Lists★ also at:AdobeDocuSignMongoDB Also at 25 morePalantirRipplingVMwareAirbnbAmazonAppleBloombergByteDanceCiscoCitadelDeliverooDoorDasheBayFlipkartGoogleLyftMetaMicrosoftNianticNVIDIANykaaOlaQualcommTwo SigmaX (Twitter) HardChapter
780Reaching Pointsalso at:PayPalWayfair Hard—