Big Tech

Meta 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
17
Medium
25
Hard
8
Mapped to chapter
20

Array

25 problems

Easy 6

27Remove Elementalso at:AmazonGoogleMicrosoft Also at 1 moreBloomberg EasyChapter
66Plus Onealso at:AmazoneBayGoogle Also at 5 moreMicrosoftAdobeBloombergIntuitSpotify Easy—
169Majority Elementalso at:AmazonGoogleMicrosoft Also at 7 moreQualcommAdobeAutodeskBloombergFreshworksJioMorgan Stanley Easy—
455Assign Cookiesalso at:AmazonGoogleMicrosoft Also at 2 moreAtlassianBloomberg Easy—
860Lemonade Changealso at:AmazonGoogle EasyChapter
1752Check if Array Is Sorted and Rotatedalso at:AmazonGoogleMicrosoft Also at 1 moreBloomberg Easy—

Medium 13

53Maximum Subarrayalso at:AmazonAppleByteDance Also at 29 moreCiscoDelleBayGoogleIntelMicrosoftTeslaAdobeAirbnbArista NetworksAtlassianAutodeskBloombergFractal AnalyticsFreshworksGoldman SachsJioLinkedInMeeshoOlaPayPalPhonePeSAPSnapSwiggyTargetVisaZomatoZoom MediumChapter
57Insert Intervalalso at:AmazonAppleGoogle Also at 5 moreMicrosoftAdobeMongoDBPayPalPhonePe MediumChapter
79Word Search★ also at:AmazonByteDanceCisco Also at 17 moreGoogleMicrosoftNetflixAdobeArista NetworksAtlassianBloombergCitadelEpic SystemsFreshworksLyftMorgan StanleyPayPalPaytmSnapUberVMware MediumChapter
81Search in Rotated Sorted Array IIalso at:AmazonCiscoAdobe Also at 2 moreBloombergCleartrip Medium—
362Design Hit Counter★ also at:AppleGoogleAtlassian Also at 9 moreBloombergCloudflareDatabricksDeliverooDropboxOpenAIRedditRobloxUber MediumChapter
529Minesweeperalso at:MicrosoftRobinhood Medium—
904Fruit Into Basketsalso at:AmazonGoogleBloomberg Medium—
986Interval List Intersectionsalso at:AmazonGoogleMicrosoft Also at 1 moreDoorDash Medium—
1011Capacity To Ship Packages Within D Daysalso at:AmazonGoogleMicrosoft Also at 3 moreBloombergFlipkartMyntra Medium—
1239Maximum Length of a Concatenated String with Unique Charactersalso at:Groww Medium—
1424Diagonal Traverse IIMedium—
1868Product of Two Run-Length Encoded ArraysMedium—
2672Number of Adjacent Elements With the Same Coloralso at:Capital OneRoblox Medium—

Hard 6

51N-Queens★ also at:AmazonByteDanceeBay Also at 10 moreGoogleMicrosoftAdobeBloombergCitadelFreshworksOlaTiger AnalyticsZohoZoom HardChapter
135Candyalso at:AmazonGoogleMicrosoft Also at 6 moreBloombergFlipkartMorgan StanleyPhonePeSAPUrban Company HardChapter
317Shortest Distance from All Buildingsalso at:ByteDanceMicrosoftDoorDash Also at 2 moreSnapSplunk Hard—
778Swim in Rising Wateralso at:GoogleMicrosoftDoorDash HardChapter
843Guess the Wordalso at:GoogleDropbox Hard—
3625Count Number of Trapezoids IIalso at:Google Hard—

Math

6 problems

Easy 3

9Palindrome Numberalso at:AmazonAMDGoogle Also at 7 moreIntelMicrosoftQualcommAdobeBloombergMorgan StanleySAP EasyChapter
69Sqrt(x)also at:AmazonGoogleMicrosoft Also at 4 moreBloombergCitadelGoldman SachsLyft Easy—
70Climbing Stairs★ also at:AmazonAMDGoogle Also at 12 moreMicrosoftQualcommAdobeBloombergCitadelFractal AnalyticsIntuitJioPayPalRakutenTiger AnalyticsZoho EasyChapter

Medium 2

62Unique Paths★ also at:AmazonGoogleMicrosoft Also at 8 moreQualcommAdobeBloombergFlipkartGoldman SachsInMobiRazorpayVMware MediumChapter
670Maximum Swapalso at:ByteDance Medium—

Hard 1

224Basic Calculator★ also at:AmazonGoogleMicrosoft Also at 5 moreTeslaAdobeBloombergCitadelDoorDash HardChapter

Tree

6 problems

Easy 3

104Maximum Depth of Binary Tree★ also at:AmazonByteDanceGoogle Also at 5 moreMicrosoftQualcommAdobeArista NetworksLinkedIn EasyChapter
110Balanced Binary Tree★ also at:AmazonByteDanceGoogle Also at 4 moreMicrosoftAdobeBloombergInMobi EasyChapter
572Subtree of Another Treealso at:eBayGoogle Easy—

Medium 3

98Validate Binary Search Tree★ also at:AmazonByteDanceeBay Also at 7 moreGoogleMicrosoftAdobeBloombergCitadelOYOVMware MediumChapter
199Binary Tree Right Side Viewalso at:AmazonByteDanceeBay Also at 6 moreGoogleMicrosoftAdobeOlaSamsaraVMware MediumChapter
298Binary Tree Longest Consecutive SequenceMedium—

Hash Table

5 problems

Easy 1

205Isomorphic Stringsalso at:AmazonGoogleMicrosoft Also at 3 moreAdobeBloombergZomato Easy—

Medium 3

438Find All Anagrams in a Stringalso at:AmazonGoogleMicrosoft Also at 5 moreBloombergDatabricksIntuitRevolutSnowflake MediumChapter
3713Longest Balanced Substring Ialso at:AmazonGoogle Medium—
3714Longest Balanced Substring IIalso at:AmazonGoogleBloomberg Medium—

Hard 1

127Word Ladderalso at:AmazonAppleGoogle Also at 15 moreMicrosoftBloombergDocuSignFlipkartLinkedInLyftOktaPhonePeRedditSnapSpotifyUberVMwareYelpZscaler HardChapter

Misc

8 problems

Easy 4

408Valid Word Abbreviationalso at:DatadogDuolingoZoom Easy—
620Not Boring Moviesalso at:Google Easy—
696Count Binary Substringsalso at:AmazonDellGoogle Also at 4 moreMicrosoftBloombergJPMorganMeesho Easy—
1758Minimum Changes To Make Alternating Binary Stringalso at:Tesla Easy—

Medium 4

19Remove Nth Node From End of Listalso at:AmazonAppleByteDance Also at 8 moreGoogleMicrosoftQualcommAdobeInMobiLINEMorgan StanleyVMware Medium—
207Course Schedule★ also at:AmazonAppleByteDance Also at 22 moreeBayGoogleMicrosoftCars24CitadelCloudflareCrowdStrikeDoorDashFlipkartIntuitPayPalRobloxSalesforceSnapSnowflakeSwiggyTargetToastUberWalmart Global TechYelpZomato MediumChapter
1382Balance a Binary Search Treealso at:AmazonMicrosoftBloomberg Medium—
1653Minimum Deletions to Make String Balancedalso at:GoogleMicrosoftUrban Company Medium—