Gaming

Roblox 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
32
Hard
11
Mapped to chapter
23

Array

37 problems

Easy 3

1Two Sum★ also at:AdobeAirbnbAmazon Also at 47 moreAMDAppleAtlassianAutodeskBloombergByteDanceCiscoDelhiveryDellDoorDashDropboxeBayEpic SystemsExpediaFlipkartFractal AnalyticsFreshworksGoogleIntelIntuitJane StreetJioJPMorganJuspayLyftMeeshoMetaMicrosoftMorgan StanleyNVIDIAOlaPayPalPaytmPhonePeQualcommSAPSplunkSpotifySwiggyTargetToastTwilioVisaVMwareWalmart Global TechYelpZoho EasyChapter
14Longest Common Prefixalso at:AdobeAmazonApple Also at 15 moreBloombergeBayFractal AnalyticsGoogleJane StreetMetaMicrosoftPhonePeQualcommRevolutSAPSplunkTargetTwilioYelp EasyChapter
661Image Smootheralso at:Microsoft Easy—

Medium 25

48Rotate Image★ also at:AdobeAmazonApple Also at 17 moreBloombergCiscoDiscordFlipkartGoogleIntelJPMorganLyftMetaMicrosoftNetflixPayPalQualcommRakutenSamsaraVisaZoho MediumChapter
54Spiral Matrixalso at:AdobeAmazonAMD Also at 21 moreAppleAutodeskBloombergByteDanceCapital OneCiscoDatabricksDelhiveryeBayEpic SystemsFlipkartGoogleIntuitMetaMicrosoftMorgan StanleyNetflixOYOPayPalPhonePeZoho MediumChapter
56Merge Intervalsalso at:AdobeAirtelAmazon Also at 46 moreAMDAppleAtlassianAutodeskBloombergByteDanceCars24CiscoCitadelCrowdStrikeDatabricksDocuSignDoorDashDropboxeBayExpediaFlipkartGoldman SachsGoogleInstacartJuspayMetaMicrosoftMorgan StanleyNetflixOktaOYOPalantirPayPalPhonePeQualcommRazorpayRipplingSAPSnapTargetTeslaToastUberVisaVMwareWalmart Global TechX (Twitter)YelpZohoZomato MediumChapter
128Longest Consecutive Sequence★ also at:AdobeAmazonApple Also at 17 moreAtlassianBloombergChimeCiscoGoogleMetaMicrosoftMyntraNVIDIAOktaPayPalPaytmPhonePeRakutenSpotifySwiggyUber MediumChapter
362Design Hit Counter★ also at:AppleAtlassianBloomberg Also at 9 moreCloudflareDatabricksDeliverooDropboxGoogleMetaOpenAIRedditUber MediumChapter
380Insert Delete GetRandom O(1)also at:AdobeAmazonApple Also at 20 moreBloombergCars24CiscoCitadelDocuSignDoorDashGoogleIntuitLinkedInMicrosoftNetflixOktaOYOSamsaraSnapTwilioUberVMwareX (Twitter)Yelp MediumChapter
528Random Pick with Weightalso at:AmazonChimeCoinbase Also at 10 moreGoogleLINELinkedInMetaMicrosoftNetflixPayPalRevolutSnapTwo Sigma Medium—
621Task Scheduler★ also at:AmazonAppleDocuSign Also at 5 moreGoogleIntuitMicrosoftOktaVMware MediumChapter
723Candy Crushalso at:Capital OneMeta Medium—
849Maximize Distance to Closest Personalso at:Snap Medium—
994Rotting Oranges★ also at:AdobeAmazonBloomberg Also at 23 moreChimeCitadelCleartripDoorDashDream11eBayFlipkartGoogleIntuitLinkedInMetaMicrosoftMyntraOpenAIOYOPayPalPhonePeRakutenSalesforceUberUrban CompanyZohoZoom MediumChapter
1248Count Number of Nice Subarraysalso at:Deliveroo MediumChapter
1472Design Browser Historyalso at:AmazonBloombergChime Also at 4 moreDoorDashGoldman SachsSnapSnowflake MediumChapter
1552Magnetic Force Between Two Ballsalso at:AmazonFlipkartMeta Also at 1 moreMicrosoft Medium—
1743Restore the Array From Adjacent Pairsalso at:Capital OneMetaRobinhood Medium—
1814Count Nice Pairs in an Arrayalso at:Block Medium—
1861Rotating the Boxalso at:AmazonBlockGoogle Also at 1 moreMeta Medium—
2021Brightest Position on Streetalso at:Robinhood Medium—
2502Design Memory Allocatoralso at:AmazonCapital OneNVIDIA Also at 3 moreOpenAIQualcommTwo Sigma Medium—
2537Count the Number of Good SubarraysMedium—
2672Number of Adjacent Elements With the Same Coloralso at:Capital OneMeta Medium—
2768Number of Black Blocksalso at:BlockStripeX (Twitter) Medium—
2817Minimum Absolute Difference Between Elements With Constraintalso at:Capital OneDatabricksVisa Medium—
3043Find the Length of the Longest Common Prefixalso at:AmazonBloombergCapital One Also at 4 moreCoinbaseDatabricksGoogleVisa Medium—
3071Minimum Operations to Write the Letter Y on a Gridalso at:Visa Medium—

Hard 9

42Trapping Rain Wateralso at:AdobeAirbnbAmazon Also at 34 moreAtlassianBloombergByteDanceCitadelCrowdStrikeDocuSigneBayFlipkartGoldman SachsGoogleGrowwInMobiIntelIntuitLyftMetaMicrosoftMyntraNaviNVIDIAOpenAIPayPalPaytmPhonePeQualcommRakutenSAPSnowflakeSwiggyTeslaUrban CompanyWalmart Global TechX (Twitter)Zoho HardChapter
68Text Justificationalso at:AirbnbAmazonAtlassian Also at 15 moreAutodeskBloombergCapital OneCoinbaseDatabricksGoogleLyftMicrosoftMongoDBNetflixPayPalRobinhoodSamsaraTwilioVisa Hard—
84Largest Rectangle in Histogram★ also at:AdobeAmazonBloomberg Also at 11 moreCiscoDeliverooDoorDashFlipkartGoogleLinkedInMetaMicrosoftMyntraNaviOYO HardChapter
239Sliding Window Maximum★ also at:AdobeAmazonAutodesk Also at 20 moreBloombergByteDanceCiscoCitadelDeliverooDoorDashExpediaGoogleJPMorganJuspayLINELyftMetaMicrosoftMongoDBNVIDIAOYOPhonePeVMwareWayfair HardChapter
759Employee Free Timealso at:AirbnbCitadelGoogle Also at 2 moreIntuitMicrosoft Hard—
1434Number of Ways to Wear Different Hats to Each OtherHard—
2251Number of Flowers in Full Bloomalso at:DatabricksNetflixPhonePe Also at 1 moreSamsara Hard—
3161Block Placement Queriesalso at:Autodesk Hard—
3459Length of Longest V-Shaped Diagonal SegmentHard—

Hash Table

5 problems

Easy 1

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

Medium 4

3Longest Substring Without Repeating Charactersalso at:AdobeAirtelAmazon Also at 45 moreAMDAppleArista NetworksAtlassianBloombergByteDanceCiscoDellDocuSignDream11DuolingoeBayFlipkartFractal AnalyticsFreshworksGoogleIntelIntuitJPMorganJuspayLinkedInMetaMicrosoftMorgan StanleyMyntraNetflixNVIDIAPayPalPaytmQualcommRakutenRipplingSalesforceSAPSpotifySwiggyTeslaToastUrban CompanyVisaVMwareYelpZohoZomatoZoom MediumChapter
208Implement Trie (Prefix Tree)★ also at:AmazonAppleBlock Also at 10 moreBloombergCitadelDocuSignDoorDasheBayGoogleMetaMicrosoftMongoDBX (Twitter) MediumChapter
767Reorganize Stringalso at:AmazonCitadelDiscord Also at 7 moreDuolingoeBayGoogleIntuitMicrosoftTeslaZoho MediumChapter
1297Maximum Number of Occurrences of a Substringalso at:AtlassianSamsara Medium—

String

3 problems

Easy 1

20Valid Parentheses★ also at:AdobeAirbnbAmazon Also at 36 moreAutodeskBloombergCiscoCoinDCXCrowdStrikeDelleBayEpic SystemsFlipkartFreshworksGoogleGrowwIntelIntuitJane StreetJioLinkedInLyftMetaMicrosoftNetflixNVIDIAPayPalPaytmPhonePeQualcommSAPSplunkSpotifySwiggyTargetTeslaToastTwilioVMwareX (Twitter) EasyChapter

Medium 1

1419Minimum Number of Frogs CroakingMedium—

Hard 1

642Design Search Autocomplete Systemalso at:BloombergCiscoCitadel Also at 4 moreGoogleLyftMongoDBPinterest HardChapter

Misc

5 problems

Easy 2

933Number of Recent Callsalso at:AmazonBloombergDatabricks Also at 3 moreGoogleMetaMicrosoft EasyChapter
1280Students and Examinationsalso at:AmazonMicrosoft Easy—

Medium 2

210Course Schedule IIalso at:AmazonAppleArista Networks Also at 24 moreBloombergCars24CitadelCleartripCoinbaseCure.fitDatabricksDoorDashFlipkartGoogleIntuitLinkedInMetaMicrosoftMongoDBNetflixPalantirQualcommSalesforceSnapSnowflakeTeslaUberUrban Company MediumChapter
1364Number of Trusted Contacts of a CustomerMedium—

Hard 1

273Integer to English Wordsalso at:AmazonAppleBlock Also at 7 moreCiscoDelhiveryFractal AnalyticsMicrosoftPalantirSplunkZscaler Hard—