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Full Courses on Most important topics and questions

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NumTypeFull Course

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1Complete Guide for Data Structureshttps://www.youtube.com/watch?v=2h433OItQiA

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2Understanding Big o and Time Complexityhttps://www.youtube.com/watch?v=7P0qxxEy2-w

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3Full Course on DSA coding Patterns

https://www.youtube.com/watch?v=GLTR39VIAdc

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410 Golden Rules for Any Coding Interviewhttps://www.youtube.com/watch?v=PKXD2M2kaXQ

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5Arrays for Technical Interviews - Full Course

https://www.youtube.com/watch?v=-o5w6h80ZA8

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Dynamic Programming for Technical Interviews - Full Course

https://www.youtube.com/watch?v=EeAJ6YKGJM8

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Graph Algorithms for Technical Interviews - Full Course

https://www.youtube.com/watch?v=Ob0YvI9M02o

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8Intervals for Technical Interviews - Full Coursehttps://www.youtube.com/watch?v=GOCfvrFsIOk

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Hashing Algorithms for Technical Interviews - Full Course

https://www.youtube.com/watch?v=irua6hf3kBM

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10Linked Lists for Technical Interviews - Full Coursehttps://www.youtube.com/watch?v=Laugw5Uj57g

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11Strings for Technical Interviews - Full Coursehttps://www.youtube.com/watch?v=5xDT3AG7988

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12Binary For Technical Interviews - Full Coursehttps://www.youtube.com/watch?v=CzAZzRcd8Oc

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13Tree Algorithm for Technical Interviews - Full Coursehttps://www.youtube.com/watch?v=1R2aM_BaiMg

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14Master the TWO Pointer Coding Patternhttps://www.youtube.com/watch?v=Fue0SgYBxrc

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15Sliding Window Coding Patternhttps://www.youtube.com/watch?v=CHVSDFeC-L4

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16Intervals Coding Patternhttps://www.youtube.com/watch?v=HNSHVtSGMFk

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17Master BFS - Breadth First Searchhttps://www.youtube.com/watch?v=A1UG1Fc-TVc

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18MAster DFS - Depth First Searchhttps://www.youtube.com/watch?v=6gNAe0Fug8I

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19Entire Blind 75 Solvedhttps://www.youtube.com/watch?v=PieZjz2Pyhw

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Most Popular Tech Interview Questions asked @ FAANG

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NumLeetCode ProblemTopicVideo ExplanationAsked By Company + Number of TimesLevel

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1Two SumArrayhttps://www.youtube.com/watch?v=NP9nLwKzXGAAmazon - 108Apple - 43Google - 39Facebook - 22Bloomberg 13Easy

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2Best Time to Buy and Sell StockArrayhttps://www.youtube.com/watch?v=CCQBvgPagesAmazon - 62Microsoft - 19Bloomberg - 15Facebook - 12Google - 12Easy

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3Contains DuplicateArrayhttps://www.youtube.com/watch?v=XECOM0RnIigAmazon -17Apple - 15Google - 8Microsoft - 6Facebook - 5Easy

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4Contains Duplicate IIArrayhttps://www.youtube.com/watch?v=Te_MCY4uG-MAmazon - 6Facebook - 5Google - 2Microsoft - 2Bloomberg - 3Easy

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5Product of Array Except SelfArrayhttps://www.youtube.com/watch?v=UxmLwxH-lhMAmazon - 34Facebook - 13Microsoft - 13Apple - 8Google - 2Medium

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6Maximum SubarrayArrayhttps://www.youtube.com/watch?v=nr2djEYM7_ALinked In - 39Amazon - 32Apple - 19Microsoft - 16Google - 15Medium

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7Maximum Product SubarrayArrayhttps://www.youtube.com/watch?v=OuRQ_TCCjsULinked In - 26Amazon - 21Microsoft - 4Google - 3Infosys - 2Medium

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8Find Minimum in Rotated Sorted ArrayArrayhttps://www.youtube.com/watch?v=Dr69TSfv9JIAmazon - 8Microsoft - 7Facebook - 5Uber - 3Apple - 2Medium

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9Search in Rotated Sorted ArrayArrayhttps://www.youtube.com/watch?v=sE_4DzVc71wAmazon - 27Facebook - 22Microsoft - 22Linked in - 21Apple - 5Medium

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10Two Sum - IIArrayhttps://www.youtube.com/watch?v=c9ywRRJcP1YAmazon - 10Apple - 4Google - 2Facebook - 2Medium

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113 SumArrayhttps://www.youtube.com/watch?v=WtloSzFYvhoAmazon - 40Microsoft - 24Facebook - 21Apple - 16Google - 8Medium

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12Container With Most WaterArrayhttps://www.youtube.com/watch?v=wi8fqhNoV-YAmazon - 31Microsoft - 8Facebook - 8Apple - 5Google - 5Medium

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13Verifying an Alien DictionaryArrayhttps://www.youtube.com/watch?v=8NoyVvm1v88Faccebook - 10Uber - 4Amazon - 2Linked In - 3Apple - 2Easy

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14Next PermutationArrayhttps://www.youtube.com/watch?v=oc3OOtGmH6UFacebook - 33Amazon - 19Google - 12Apple - 10Microsoft - 8Medium

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15Remove Duplicates from Sorted ArrayArrayhttps://www.youtube.com/watch?v=0F49FLuzScUAmazon - 3Apple - 2Microsoft - 6Google - 4Facebook - 4Medium

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Find First and Last Position of Element in Sorted Array

Arrayhttps://www.youtube.com/watch?v=aPD6g96fRO4Facebook - 23Amazon - 21Microsoft - 8Bloomberg - 6Google - 6Medium

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17Trapping Rain WaterArrayhttps://www.youtube.com/watch?v=AFl_VxaO_F0Amazon - 51Goldman Sachs- 44Bloomberg - 20Facebook - 19Microsoft - 12Hard

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18Median of Two Sorted ArraysArrayhttps://www.youtube.com/watch?v=LRM4qiHLYCEAmazon - 39Apple - 20Microsoft - 18Google - 15Bloomberg - 9Hard

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19Climbing StairsDynamic Programminghttps://www.youtube.com/watch?v=N9syEXfu1RwAmazon - 16Microsoft - 5Uber - 3Google - 2Apple - 2Easy

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20Coin ChangeDynamic Programminghttps://www.youtube.com/watch?v=UOmlkfWMU6MAmazon - 28Microsoft - 13Adobe - 6Apple - 6Google - 3Medium

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21Longest Increasing SubsequenceDynamic Programminghttps://www.youtube.com/watch?v=cixz99yxgWAGoogle - 12Microsoft - 10Amazon - 6tiktok - 3Facebook - 3Medium

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22Longest Common SubsequenceDynamic Programminghttps://www.youtube.com/watch?v=lPnPdSIliIIDoorDash - 7Amazon - 6Google - 4Bloomberg - 3Microsoft - 2Medium

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23Word Break ProblemDynamic Programminghttps://www.youtube.com/watch?v=XD9tXO9HW40Amazon - 35Facebook - 20Apple - 6Microsoft - 6Google - 5Medium

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24Combination SumDynamic Programminghttps://www.youtube.com/watch?v=dJBbuDK4ZRkAmazon - 5Google - 3Microsoft - 2Facebook - 3Apple - 4Medium

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25House RobberDynamic Programminghttps://www.youtube.com/watch?v=jFmfYi_dvwQAmazon - 25Apple - 11Google - 5Microsoft - 5Bloomberg - 3Medium

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26House Robber IIDynamic Programminghttps://www.youtube.com/watch?v=c_rwra1aITYGoogle - 11Tiktok - 2Amazon - 6Microsoft - 2Facebook - 2Medium

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27Decode WaysDynamic Programminghttps://www.youtube.com/watch?v=ayGRvdnjFKgAmazon - 9Tiktok - 7Google - 6Microsoft - 6Lyft - 5Medium

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28Unique PathsDynamic Programminghttps://www.youtube.com/watch?v=klWLMgdMWCYGoogle - 17Amazon - 10Microsoft - 9Facebook - 8Apple - 6Medium

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29Pascal's TriangleDynamic Programminghttps://www.youtube.com/watch?v=f0EEHwaY3HYAmazon - 13Microsoft - 4Google - 3Apple - 2Facebook - 2Easy

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30Generate ParenthesesDynamic Programminghttps://www.youtube.com/watch?v=VzMyeCMLdPIAmazon - 38Facebook - 13Microsoft - 09Apple - 09Bloomberg - 07Medium

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31Jump GameDynamic Programminghttps://www.youtube.com/watch?v=PVNLmjJaHW0Amazon - 21Facebook - 5Apple - 4Google - 3DoorDash - 2Medium

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32Jump Game IIDynamic Programminghttps://www.youtube.com/watch?v=d_1GRnMg_zsAmazon - 12DoorDash - 04Bloomberg - 3Google - 3Microsoft - 3Medium

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33Regular Expression MatchingDynamic Programminghttps://www.youtube.com/watch?v=VFQddcCP46cMicrosoft - 18Amazon - 08Facebook - 06Google - 06Bloomberg - 03Hard

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34Race CarDynamic Programminghttps://www.youtube.com/watch?v=TAXt_TkSNfwGoogle - 92Amazon - 12Microsoft- 2Apple - 2Hard

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35Clone GraphGraphhttps://www.youtube.com/watch?v=1aN0WWM0-EoFacebook - 28Bloomberg - 8Amazon - 7Google - 5Microsoft - 3Medium

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36Course ScheduleGraphhttps://www.youtube.com/watch?v=ge9WKEsVue0Amazon - 34Google - 9Tiktok - 9Microsoft - 8Facebook - 7Medium

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37Course Schedule IIGraphhttps://www.youtube.com/watch?v=_RWV4hZdmdkAmazon - 40Google - 14Microsoft - 13Apple - 6Tik Tok - 4Medium

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38Pacific Atlantic Water FlowGraphhttps://www.youtube.com/watch?v=fTohawuMcvYAmazon - 6Google - 6Microsoft - 4Uber - 3Facebook - 2Medium

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39Number of IslandsGraphhttps://www.youtube.com/watch?v=H-2Nh2RXX6gAmazon - 115Microsoft - 44Bloomberg - 29Facebook - 25Google - 16Medium

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40Longest Consecutive SequenceGraphhttps://www.youtube.com/watch?v=sJBf-JdWGhMAmazon - 21Google - 12Microsoft - 9Bloomberg - 6Apple - 6Medium

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41Alien Dictionary (Leetcode Premium)Graphhttps://www.youtube.com/watch?v=1QbsN5JyPtoAirbnb - 18Amazon - 12Facebook - 9Google - 6Microsoft - 5Hard

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42Graph Valid Tree (Leetcode Premium)Graphhttps://www.youtube.com/watch?v=WU3-vo0MJW0Linked In - 9Google - 3Microsoft - 3Amazon - 2Bloomberg - 2Medium

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43Number of ProvincesGraphhttps://www.youtube.com/watch?v=ff38kbREIX8Amazon - 22DoorDash - 8Apple - 2Google - 2Bloomberg - 3Medium

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44Find the CelebrityGraphhttps://www.youtube.com/watch?v=lqdgGNGPS68Amazon - 5Microsoft - 4Linked in - 4Facebook - 5Apple - 3Medium

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45

Number of Connected Components in an Undirected Graph (Leetcode Premium)

Graphhttps://www.youtube.com/watch?v=NDInpfnTMosAmazon - 7Facebook - 3Google - 2Microsoft - 2Pinetrest - 2Medium

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46Roman to IntegerHashinghttps://www.youtube.com/watch?v=qmkr61ySQwQAmazon - 46Adobe - 32Apple - 27Google - 25Facebook - 11Easy

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47Copy List with Random PointerHashinghttps://www.youtube.com/watch?v=vy7ZJ4TdyS8Facebook - 31Amazon - 30Microsoft - 7Bloomberg - 5Apple - 2Medium

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48Word LadderHashinghttps://www.youtube.com/watch?v=isLTjdCw52sAmazon - 53Microsoft - 9Linked In - 7Facebook - 6Google - 2Hard

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49First Missing PositiveHashinghttps://www.youtube.com/watch?v=N8DefKVUIKwAmazon - 18Microsoft - 10Adobe - 5Google - 3Apple - 3Hard

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50Insert IntervalIntervalhttps://www.youtube.com/watch?v=16YiKk6ga7YGoogle - 15Linked In - 8Facebook - 6Amazon - 4Microsoft - 2Medium

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51Merge IntervalsIntervalhttps://www.youtube.com/watch?v=n3F2v9f8OfYFacebook - 87Amazon - 57Google - 31Apple - 22Microsoft - 17Medium

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52Non-overlapping IntervalsIntervalhttps://www.youtube.com/watch?v=y8nBFmPsAF8Facebook - 6Amazon - 5Microsoft - 3Apple - 5Google - 5Medium

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53Remove IntervalIntervalhttps://www.youtube.com/watch?v=YrB_zKEHgmQGoogle - 5Amazon - 3Microsoft - 1Medium

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54Meeting Rooms (Leetcode Premium)Intervalhttps://www.youtube.com/watch?v=5nqLIwo0oC0Google - 3Amaozn - 2Microsoft - 6Facebook - 2Bloomberg - 2Easy

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55Meeting Rooms II (Leetcode Premium)Intervalhttps://www.youtube.com/watch?v=sQkgNfoPrDwAmazon - 58Google - 22Facebook - 20Bloomberg - 19Microsoft - 18Medium

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56Add Two NumbersLinked Listhttps://www.youtube.com/watch?v=MYtp__JpTnsAmazon - 36Apple - 17Microsoft - 11Facebook - 11Google - 6Medium

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57Reverse a Linked ListLinked Listhttps://www.youtube.com/watch?v=FHhItaCZ2pEAmazon - 15Apple - 8Microsoft - 7Google - 4Facebook - 3Easy

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58Detect Cycle in a Linked ListLinked Listhttps://www.youtube.com/watch?v=k-gTqlOBT1gAmazon - 9Spotify - 4Apple - 2Microsoft - 2Google - 2Easy

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59Merge Two Sorted ListsLinked Listhttps://www.youtube.com/watch?v=Bwymxn-n6XAAmazon - 21Microsoft - 13Facebook - 12Apple - 4Bloomberg - 4Easy

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60Merge K Sorted ListsLinked Listhttps://www.youtube.com/watch?v=SlKgDtpJnxgAmazon - 54Facebook - 42Microsoft - 17Apple - 10Google - 8Hard

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61Remove Nth Node From End Of ListLinked Listhttps://www.youtube.com/watch?v=hZtAW3cp8vQFacebook - 18Amazon - 9Google - 4Microsoft - 4Apple - 3Medium

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62Reorder ListLinked Listhttps://www.youtube.com/watch?v=lBdS4AV1EGwAmazon - 9Microsoft - 8Facebook - 3Google - 3Uber - 3Medium

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63Middle of the Linked-ListLinked Listhttps://www.youtube.com/watch?v=s7cHxJBuhjgApple - 4Amazon - 3Facebook - 2Google - 2Microsoft - 3Easy

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64Flatten Binary Tree to Linked ListLinked Listhttps://www.youtube.com/watch?v=3IrFrQ2JSfgAmazon - 9Microsoft - 5Facebook - 3Apple - 2Google - 2Medium

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65Reverse Nodes in k-GroupLinked Listhttps://www.youtube.com/watch?v=P9_K8M4nnf0Microsoft - 15Amazon - 13Google - 03Apple - 03Facebook - 02Hard

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66Set Matrix ZeroesMatrixhttps://www.youtube.com/watch?v=JwQvyZcwcP4microsoft - 8Amazon - 5Bloomberg - 4Facebook - 4Apple - 2Medium

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67Spiral MatrixMatrixhttps://www.youtube.com/watch?v=xUpnTpzMqfIMicrosoft - 20Amazon - 10Apple - 8Facebook - 8Google - 7Medium