Enterprise SaaS

Twilio 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
17
Easy
7
Medium
9
Hard
1
Mapped to chapter
12

Array

10 problems

Easy 3

1Two Sum★ also at:AdobeAtlassianAutodesk Also at 47 moreDropboxEpic SystemsSAPSplunkVMwareAirbnbAmazonAMDAppleBloombergByteDanceCiscoDelhiveryDellDoorDasheBayExpediaFlipkartFractal AnalyticsFreshworksGoogleIntelIntuitJane StreetJioJPMorganJuspayLyftMeeshoMetaMicrosoftMorgan StanleyNVIDIAOlaPayPalPaytmPhonePeQualcommRobloxSpotifySwiggyTargetToastVisaWalmart Global TechYelpZoho EasyChapter
14Longest Common Prefixalso at:AdobeSAPSplunk Also at 15 moreAmazonAppleBloombergeBayFractal AnalyticsGoogleJane StreetMetaMicrosoftPhonePeQualcommRevolutRobloxTargetYelp EasyChapter
532K-diff Pairs in an ArrayEasy—

Medium 6

49Group Anagramsalso at:AdobeAtlassianAutodesk Also at 36 moreDocuSignOktaSalesforceSAPVMwareAmazonAppleBloombergCiscoCitadelDellDoorDasheBayExpediaFreshworksGoldman SachsGoogleIntuitJioJPMorganMetaMicrosoftMorgan StanleyMyntraNianticNVIDIAPayPalPhonePeSnapTargetTeslaToastWalmart Global TechWayfairYelpZoho MediumChapter
139Word Breakalso at:AdobeArista NetworksAutodesk Also at 17 moreMongoDBVMwareAmazonBlockBloombergByteDanceCleartripDiscordeBayGoogleIntuitMetaMicrosoftNetflixTargetToastUber MediumChapter
332Reconstruct Itineraryalso at:AmazonBloombergFlipkart Also at 3 moreNetflixPinterestSnap MediumChapter
380Insert Delete GetRandom O(1)also at:AdobeDocuSignLinkedIn Also at 20 moreOktaVMwareAmazonAppleBloombergCars24CiscoCitadelDoorDashGoogleIntuitMicrosoftNetflixOYORobloxSamsaraSnapUberX (Twitter)Yelp MediumChapter
560Subarray Sum Equals K★ also at:AdobeAirtelAmazon Also at 20 moreAMDAppleBloombergCiscoDeliverooeBayFlipkartGoogleJPMorganMetaMicrosoftNianticPayPalQualcommSnapSwiggyTeslaVisaWalmart Global TechZoho MediumChapter
974Subarray Sums Divisible by Kalso at:AmazonByteDanceCitadel Also at 2 moreGoogleMicrosoft MediumChapter

Hard 1

68Text Justificationalso at:AtlassianAutodeskDatabricks Also at 15 moreMongoDBAirbnbAmazonBloombergCapital OneCoinbaseGoogleLyftMicrosoftNetflixPayPalRobinhoodRobloxSamsaraVisa Hard—

Misc

7 problems

Easy 4

20Valid Parentheses★ also at:AdobeAutodeskCrowdStrike Also at 36 moreEpic SystemsLinkedInSAPSplunkVMwareAirbnbAmazonBloombergCiscoCoinDCXDelleBayFlipkartFreshworksGoogleGrowwIntelIntuitJane StreetJioLyftMetaMicrosoftNetflixNVIDIAPayPalPaytmPhonePeQualcommRobloxSpotifySwiggyTargetTeslaToastX (Twitter) EasyChapter
225Implement Stack using Queues★ also at:AmazonBloombergGoogle Also at 3 moreMetaMicrosoftQualcomm EasyChapter
965Univalued Binary TreeEasy—
1507Reformat DateEasy—

Medium 3

17Letter Combinations of a Phone Number★ also at:DropboxEpic SystemsLinkedIn Also at 15 moreVMwareAmazonAppleBloombergChimeCiscoCitadelDeliverooeBayGoogleLyftMetaMicrosoftPhonePeTesla MediumChapter
146LRU Cache★ also at:AdobeArista NetworksAutodesk Also at 59 moreCloudflareDocuSignLinkedInMongoDBOktaPalantirRipplingSalesforceSAPSnowflakeSplunkVMwareZscalerAmazonAMDAppleBloombergByteDanceCiscoCitadelCREDDelhiveryDoorDasheBayExpediaFlipkartGoogleGrowwIntelIntuitJane StreetJPMorganLINELyftMetaMicrosoftMorgan StanleyMyntraNetflixNianticNVIDIANykaaOlaPayPalPhonePeQualcommRakutenRazorpayRedditSnapSpotifySwiggyTargetTeslaToastUberVisaX (Twitter)Zoom MediumChapter
935Knight Dialeralso at:Snap Medium—