Marketplace & Mobility

Deliveroo 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
18
Easy
2
Medium
9
Hard
7
Mapped to chapter
13

Array

10 problems

Easy 1

2942Find Words Containing CharacterEasy—

Medium 6

152Maximum Product Subarrayalso at:WayfairAdobeAmazon Also at 13 moreBloombergByteDanceDelhiveryGoogleJuspayLINELinkedInMetaMicrosoftMorgan StanleyPayPalQualcommSwiggy Medium—
215Kth Largest Element in an Array★ also at:AdobeAmazonApple Also at 17 moreAutodeskBloombergByteDanceeBayFlipkartFreshworksGoogleIntuitLinkedInMetaMicrosoftMorgan StanleyPayPalQualcommSAPSpotifyVMware MediumChapter
322Coin Change★ also at:AdobeAmazonAtlassian Also at 18 moreBloombergByteDanceCleartripDatadogeBayFractal AnalyticsGoogleIntuitMetaMicrosoftMorgan StanleyNetflixNianticPayPalPhonePePinterestSAPVMware MediumChapter
362Design Hit Counter★ also at:UberAppleAtlassian Also at 9 moreBloombergCloudflareDatabricksDropboxGoogleMetaOpenAIRedditRoblox MediumChapter
560Subarray Sum Equals K★ also at:AdobeAirtelAmazon Also at 20 moreAMDAppleBloombergCiscoeBayFlipkartGoogleJPMorganMetaMicrosoftNianticPayPalQualcommSnapSwiggyTeslaTwilioVisaWalmart Global TechZoho MediumChapter
1248Count Number of Nice Subarraysalso at:Roblox MediumChapter

Hard 3

84Largest Rectangle in Histogram★ also at:DoorDashAdobeAmazon Also at 11 moreBloombergCiscoFlipkartGoogleLinkedInMetaMicrosoftMyntraNaviOYORoblox HardChapter
239Sliding Window Maximum★ also at:DoorDashExpediaLyft Also at 20 moreWayfairAdobeAmazonAutodeskBloombergByteDanceCiscoCitadelGoogleJPMorganJuspayLINEMetaMicrosoftMongoDBNVIDIAOYOPhonePeRobloxVMware HardChapter
305Number of Islands IIalso at:UberDropboxGoogle Also at 2 morePhonePeSnap HardChapter

Hash Table

5 problems

Easy 1

359Logger Rate Limiteralso at:AmazonAtlassianCloudflare Also at 6 moreDocuSignGoogleIntuitNetflixRedditRoblox EasyChapter

Medium 2

17Letter Combinations of a Phone Number★ also at:LyftAmazonApple Also at 15 moreBloombergChimeCiscoCitadelDropboxeBayEpic SystemsGoogleLinkedInMetaMicrosoftPhonePeTeslaTwilioVMware MediumChapter
1797Design Authentication Manageralso at:DocuSignMicrosoftX (Twitter) MediumChapter

Hard 2

76Minimum Window Substringalso at:AirbnbLyftAdobe Also at 16 moreAmazonBloombergByteDanceCiscoeBayGoldman SachsGoogleInMobiLinkedInMeeshoMetaMicrosoftSAPSnapSwiggyVMware HardChapter
987Vertical Order Traversal of a Binary Treealso at:DoorDashUberAdobe Also at 6 moreAmazonBloombergGoogleMetaMicrosoftReddit Hard—

Misc

3 problems

Medium 1

151Reverse Words in a Stringalso at:YelpAmazonApple Also at 11 moreBloombergChimeCiscoGoogleIntelMetaMicrosoftNykaaPaytmSnapVMware Medium—

Hard 2

23Merge k Sorted Lists★ also at:AirbnbDoorDashLyft Also at 25 moreAdobeAmazonAppleBloombergByteDanceCiscoCitadelCloudflareDocuSigneBayFlipkartGoogleMetaMicrosoftMongoDBNianticNVIDIANykaaOlaPalantirQualcommRipplingTwo SigmaVMwareX (Twitter) HardChapter
301Remove Invalid Parenthesesalso at:Meta Hard—