Indian

Ola 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
14
Easy
3
Medium
8
Hard
3
Mapped to chapter
11

Array

7 problems

Easy 2

1Two Sum★ also at:DelhiveryFlipkartFractal Analytics Also at 47 moreFreshworksJioJuspayMeeshoPaytmPhonePeSwiggyZohoAdobeAirbnbAmazonAMDAppleAtlassianAutodeskBloombergByteDanceCiscoDellDoorDashDropboxeBayEpic SystemsExpediaGoogleIntelIntuitJane StreetJPMorganLyftMetaMicrosoftMorgan StanleyNVIDIAPayPalQualcommRobloxSAPSplunkSpotifyTargetToastTwilioVisaVMwareWalmart Global TechYelp EasyChapter
121Best Time to Buy and Sell Stockalso at:AirtelFlipkartGroww Also at 39 moreJioMyntraPhonePeSwiggyTiger AnalyticsZohoAdobeAmazonAppleAtlassianBloombergByteDanceCiscoCitadelCoinbaseGoldman SachsGoogleInstacartIntuitJPMorganLyftMetaMicrosoftMorgan StanleyNetflixNVIDIAPayPalRakutenRobinhoodSAPSnapTargetTeslaToastTwo SigmaUberVisaVMwareWalmart Global Tech Easy—

Medium 4

53Maximum Subarrayalso at:Fractal AnalyticsFreshworksJio Also at 29 moreMeeshoPhonePeSwiggyZomatoAdobeAirbnbAmazonAppleArista NetworksAtlassianAutodeskBloombergByteDanceCiscoDelleBayGoldman SachsGoogleIntelLinkedInMetaMicrosoftPayPalSAPSnapTargetTeslaVisaZoom MediumChapter
75Sort Colorsalso at:Cars24DelhiveryFlipkart Also at 18 moreGrowwInfo Edge (Naukri)PhonePeSwiggyAmazonAutodeskBloombergCiscoeBayGoogleMetaMicrosoftMorgan StanleyNVIDIAPayPalTargetVMwareWalmart Global Tech MediumChapter
200Number of Islands★ also at:CREDFlipkartMeesho Also at 43 morePhonePeUrban CompanyZohoZomatoAdobeAmazonAMDAppleAutodeskBloombergByteDanceCapital OneCiscoCitadelCloudflareCrowdStrikeDocuSignDoorDashDropboxeBayGoldman SachsGoogleIntelIntuitLinkedInLyftMetaMicrosoftOktaPayPalPinterestQualcommRedditSAPSnapSplunkSpotifyTargetTeslaToastUberVMwareWalmart Global Tech MediumChapter
240Search a 2D Matrix IIalso at:AirtelInMobiOYO Also at 11 moreZomatoAdobeAmazonBloombergByteDanceCitadeleBayGoogleMicrosoftPayPalSnap Medium—

Hard 1

51N-Queens★ also at:FreshworksTiger AnalyticsZoho Also at 10 moreAdobeAmazonBloombergByteDanceCitadeleBayGoogleMetaMicrosoftZoom HardChapter

Tree

3 problems

Easy 1

226Invert Binary Treealso at:AmazonBloombergGoogle Also at 2 moreMetaVMware Easy—

Medium 2

103Binary Tree Zigzag Level Order Traversalalso at:AmazonByteDanceCitadel Also at 5 moreeBayGoogleIntuitMicrosoftZoom MediumChapter
199Binary Tree Right Side Viewalso at:AdobeAmazonByteDance Also at 6 moreeBayGoogleMetaMicrosoftSamsaraVMware MediumChapter

Misc

4 problems

Medium 2

146LRU Cache★ also at:CREDDelhiveryFlipkart Also at 59 moreGrowwMyntraNykaaPhonePeRazorpaySwiggyAdobeAmazonAMDAppleArista NetworksAutodeskBloombergByteDanceCiscoCitadelCloudflareDocuSignDoorDasheBayExpediaGoogleIntelIntuitJane StreetJPMorganLINELinkedInLyftMetaMicrosoftMongoDBMorgan StanleyNetflixNianticNVIDIAOktaPalantirPayPalQualcommRakutenRedditRipplingSalesforceSAPSnapSnowflakeSplunkSpotifyTargetTeslaToastTwilioUberVisaVMwareX (Twitter)ZoomZscaler MediumChapter
394Decode Stringalso at:PhonePeRazorpayZoho Also at 11 moreAmazonArista NetworksBloombergByteDanceCiscoeBayGoogleIntuitMicrosoftVMwareYelp MediumChapter

Hard 2

23Merge k Sorted Lists★ also at:FlipkartNykaaAdobe Also at 25 moreAirbnbAmazonAppleBloombergByteDanceCiscoCitadelCloudflareDeliverooDocuSignDoorDasheBayGoogleLyftMetaMicrosoftMongoDBNianticNVIDIAPalantirQualcommRipplingTwo SigmaVMwareX (Twitter) HardChapter
295Find Median from Data Streamalso at:FlipkartInMobiMeesho Also at 16 moreNaviOYOAdobeAmazonAppleByteDanceCitadelDocuSigneBayGoogleMicrosoftOktaPayPalUberVMwareWise HardChapter