Big Tech
Google 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
- 19
- Medium
- 21
- Hard
- 10
- Mapped to chapter
- 19
Array
27 problemsEasy 9
| # | Title | Difficulty | Also at | Chapter |
|---|---|---|---|---|
| 217 | Contains Duplicatealso at:AmazonAppleMeta Also at 6 moreMicrosoftNetflixAdobeAirbnbBloombergPalantir | Easy | Chapter | |
| 414 | Third Maximum Number | Easy | Chapter | |
| 860 | Lemonade Changealso at:AmazonMeta | Easy | Chapter | |
| 961 | N-Repeated Element in Size 2N Arrayalso at:AmazonBloomberg | Easy | — | |
| 1512 | Number of Good Pairsalso at:AmazonMicrosoft | Easy | — | |
| 2540 | Minimum Common Value | Easy | — | |
| 3074 | Apple Redistribution into Boxes | Easy | — | |
| 3637 | Trionic Array Ialso at:AmazonMeta | Easy | — | |
| 3875 | Construct Uniform Parity Array I | Easy | — |
Medium 12
| # | Title | Difficulty | Also at | Chapter |
|---|---|---|---|---|
| 75 | Sort Colorsalso at:AmazonCiscoeBay Also at 18 moreMetaMicrosoftNVIDIAAutodeskBloombergCars24DelhiveryFlipkartGrowwInfo Edge (Naukri)Morgan StanleyOlaPayPalPhonePeSwiggyTargetVMwareWalmart Global Tech | Medium | Chapter | |
| 90 | Subsets IIalso at:AmazonMicrosoftBloomberg Also at 1 moreNiantic | Medium | Chapter | |
| 373 | Find K Pairs with Smallest Sumsalso at:AmazonMetaFlipkart Also at 2 moreSamsaraWise | Medium | — | |
| 421 | Maximum XOR of Two Numbers in an Array | Medium | Chapter | |
| 698 | Partition to K Equal Sum Subsetsalso at:AmazonByteDanceeBay Also at 3 moreMicrosoftLinkedInVMware | Medium | Chapter | |
| 912 | Sort an Array★ also at:AmazonMicrosoft | Medium | Chapter | |
| 1034 | Coloring A Border | Medium | — | |
| 1043 | Partition Array for Maximum Sumalso at:AmazonBloomberg | Medium | Chapter | |
| 1049 | Last Stone Weight II | Medium | Chapter | |
| 1233 | Remove Sub-Folders from the Filesystem | Medium | — | |
| 1882 | Process Tasks Using Serversalso at:X (Twitter) | Medium | — | |
| 3660 | Jump Game IXalso at:Amazon | Medium | — |
Hard 6
| # | Title | Difficulty | Also at | Chapter |
|---|---|---|---|---|
| 269 | Alien Dictionaryalso at:AmazonMetaAirbnb Also at 7 moreBloombergCitadelSnapUberVMwareX (Twitter)Zoom | Hard | Chapter | |
| 1458 | Max Dot Product of Two Subsequencesalso at:AmazonMeta | Hard | — | |
| 1547 | Minimum Cost to Cut a Stickalso at:AmazonMicrosoftLINE | Hard | Chapter | |
| 2534 | Time Taken to Cross the Dooralso at:Salesforce | Hard | — | |
| 3454 | Separate Squares IIalso at:Amazon | Hard | — | |
| 3562 | Maximum Profit from Trading Stocks with Discounts | Hard | — |
Hash Table
7 problemsEasy 1
| # | Title | Difficulty | Also at | Chapter |
|---|---|---|---|---|
| 359 | Logger Rate Limiteralso at:AmazonNetflixAtlassian Also at 6 moreCloudflareDeliverooDocuSignIntuitRedditRoblox | Easy | Chapter |
Medium 4
| # | Title | Difficulty | Also at | Chapter |
|---|---|---|---|---|
| 17 | Letter Combinations of a Phone Number★ also at:AmazonAppleCisco Also at 15 moreeBayMetaMicrosoftTeslaBloombergChimeCitadelDeliverooDropboxEpic SystemsLinkedInLyftPhonePeTwilioVMware | Medium | Chapter | |
| 433 | Minimum Genetic Mutationalso at:X (Twitter) | Medium | — | |
| 451 | Sort Characters By Frequencyalso at:AmazonMetaMicrosoft Also at 3 moreAirtelFlipkartTarget | Medium | Chapter | |
| 1781 | Sum of Beauty of All Substringsalso at:Meta | Medium | — |
Hard 2
| # | Title | Difficulty | Also at | Chapter |
|---|---|---|---|---|
| 30 | Substring with Concatenation of All Wordsalso at:AmazonMetaMicrosoft Also at 2 moreAdobeBloomberg | Hard | Chapter | |
| 76 | Minimum Window Substringalso at:AmazonByteDanceCisco Also at 16 moreeBayMetaMicrosoftAdobeAirbnbBloombergDeliverooGoldman SachsInMobiLinkedInLyftMeeshoSAPSnapSwiggyVMware | Hard | Chapter |
Database
4 problemsEasy 3
| # | Title | Difficulty | Also at | Chapter |
|---|---|---|---|---|
| 181 | Employees Earning More Than Their Managersalso at:AmazonMetaMicrosoft Also at 2 moreAdobeBloomberg | Easy | — | |
| 511 | Game Play Analysis I | Easy | — | |
| 577 | Employee Bonusalso at:AmazonMetaMicrosoft | Easy | — |
Medium 1
| # | Title | Difficulty | Also at | Chapter |
|---|---|---|---|---|
| 585 | Investments in 2016also at:MetaX (Twitter) | Medium | — |
Math
4 problemsEasy 2
| # | Title | Difficulty | Also at | Chapter |
|---|---|---|---|---|
| 292 | Nim Gamealso at:Adobe | Easy | — | |
| 2235 | Add Two Integersalso at:AmazonMicrosoftAtlassian Also at 1 moreJane Street | Easy | — |
Medium 1
| # | Title | Difficulty | Also at | Chapter |
|---|---|---|---|---|
| 3021 | Alice and Bob Playing Flower Game | Medium | — |
Hard 1
| # | Title | Difficulty | Also at | Chapter |
|---|---|---|---|---|
| 60 | Permutation Sequencealso at:AmazonX (Twitter) | Hard | — |
String
3 problemsEasy 3
| # | Title | Difficulty | Also at | Chapter |
|---|---|---|---|---|
| 657 | Robot Return to Originalso at:MicrosoftGoldman Sachs | Easy | — | |
| 1859 | Sorting the Sentence | Easy | — | |
| 2839 | Check if Strings Can be Made Equal With Operations I | Easy | — |
Misc
5 problemsEasy 1
| # | Title | Difficulty | Also at | Chapter |
|---|---|---|---|---|
| 696 | Count Binary Substringsalso at:AmazonDellMeta Also at 4 moreMicrosoftBloombergJPMorganMeesho | Easy | — |
Medium 3
| # | Title | Difficulty | Also at | Chapter |
|---|---|---|---|---|
| 148 | Sort Listalso at:AmazonByteDanceMeta Also at 4 moreMicrosoftAdobeBloombergDelhivery | Medium | Chapter | |
| 236 | Lowest Common Ancestor of a Binary Tree★ also at:AmazonByteDanceCisco Also at 12 moreeBayIntelMetaMicrosoftAdobeAtlassianBloombergFreshworksIntuitMongoDBSAPSplunk | Medium | Chapter | |
| 445 | Add Two Numbers IIalso at:AmazonByteDanceeBay Also at 2 moreMicrosoftBloomberg | Medium | — |
Hard 1
| # | Title | Difficulty | Also at | Chapter |
|---|---|---|---|---|
| 2872 | Maximum Number of K-Divisible Components | Hard | — |
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