FleetCode
Video Solutions
Watch step-by-step video walkthroughs for DSA problems. Learn from expert explanations.
32
With Videos
6
Easy
18
Medium
8
Hard
3201. Find the Maximum Length of Valid Subsequence I
MediumArrayDynamic Programming
Watch Solutions54.9% acceptance
3202. Find the Maximum Length of Valid Subsequence II
MediumArrayDynamic Programming
Watch Solutions57.2% acceptance
3203. Find Minimum Diameter After Merging Two Trees
HardBreadth-First SearchDepth-First SearchGraph
Watch Solutions57.1% acceptance
3204. Bitwise User Permissions Analysis
MediumDatabase
Watch Solutions94.3% acceptance
3207. Maximum Points After Enemy Battles
MediumArrayGreedy
Watch Solutions33.2% acceptance
3208. Alternating Groups II
MediumArraySliding Window
Watch Solutions59.9% acceptance
3209. Number of Subarrays With AND Value of K
HardArrayBinary SearchBit Manipulation
Watch Solutions35.7% acceptance
3211. Generate Binary Strings Without Adjacent Zeros
MediumBacktrackingBit ManipulationString
Watch Solutions88.3% acceptance
3212. Count Submatrices With Equal Frequency of X and Y
MediumArrayMatrixPrefix Sum
Watch Solutions69.5% acceptance
3213. Construct String with Minimum Cost
HardArrayDynamic ProgrammingString
Watch Solutions19.0% acceptance
3214. Year on Year Growth Rate
HardDatabase
Watch Solutions51.7% acceptance
3216. Lexicographically Smallest String After a Swap
EasyGreedyString
Watch Solutions54.6% acceptance
3217. Delete Nodes From Linked List Present in Array
MediumArrayHash TableLinked List
Watch Solutions69.5% acceptance
3218. Minimum Cost for Cutting Cake I
MediumArrayDynamic ProgrammingGreedy
Watch Solutions58.5% acceptance
3220. Odd and Even Transactions
MediumDatabase
Watch Solutions69.8% acceptance
3223. Minimum Length of String After Operations
MediumCountingHash TableString
Watch Solutions75.0% acceptance
3226. Number of Bit Changes to Make Two Integers Equal
EasyBit Manipulation
Watch Solutions63.4% acceptance
3227. Vowels Game in a String
MediumBrainteaserGame TheoryMath
Watch Solutions77.1% acceptance
3228. Maximum Number of Operations to Move Ones to the End
MediumCountingGreedyString
Watch Solutions67.2% acceptance
3229. Minimum Operations to Make Array Equal to Target
HardArrayDynamic ProgrammingGreedy
Watch Solutions41.4% acceptance
3230. Customer Purchasing Behavior Analysis
MediumDatabase
Watch Solutions37.8% acceptance
3232. Find if Digit Game Can Be Won
EasyArrayMath
Watch Solutions81.5% acceptance
3233. Find the Count of Numbers Which Are Not Special
MediumArrayMathNumber Theory
Watch Solutions28.3% acceptance
3234. Count the Number of Substrings With Dominant Ones
MediumEnumerationSliding WindowString
Watch Solutions42.1% acceptance
3236. CEO Subordinate Hierarchy
HardDatabase
Watch Solutions72.3% acceptance
3238. Find the Number of Winning Players
EasyArrayCountingHash Table
Watch Solutions60.5% acceptance
3240. Minimum Number of Flips to Make Binary Grid Palindromic II
MediumArrayMatrixTwo Pointers
Watch Solutions25.5% acceptance
3242. Design Neighbor Sum Service
EasyArrayDesignHash Table
Watch Solutions76.4% acceptance
3243. Shortest Distance After Road Addition Queries I
MediumArrayBreadth-First SearchGraph
Watch Solutions61.9% acceptance
3244. Shortest Distance After Road Addition Queries II
HardArrayGraphGreedy
Watch Solutions26.5% acceptance
3246. Premier League Table Ranking
EasyDatabase
Watch Solutions83.3% acceptance
3250. Find the Count of Monotonic Pairs I
HardArrayCombinatoricsDynamic Programming
Watch Solutions47.6% acceptance
Learn DSA with Video Solutions
Video solutions provide a visual, step-by-step approach to understanding Data Structures and Algorithms problems. Watching an expert walk through the thought process, from brute force to optimal solution, helps build the intuition needed for coding interviews.
How to Use Video Solutions Effectively
- Try the problem first: Spend at least 20-30 minutes attempting the problem before watching the video
- Pause and think: When the video mentions a key insight, pause and try to work through it yourself
- Code along: After understanding the approach, implement the solution on your own
- Review text solutions: Combine video walkthroughs with detailed text explanations for deeper understanding
Video Solutions by Difficulty
Start with Easy problems to build confidence and learn fundamental patterns. Progress to Medium problems where most interview questions fall. Hard problems help you prepare for the toughest interview rounds at top tech companies.