FleetCode
Video Solutions
Watch step-by-step video walkthroughs for DSA problems. Learn from expert explanations.
36
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36
Easy
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Hard
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202. Happy Number
EasyHash TableMathTwo Pointers
Watch Solutions60.0% acceptance
206. Reverse Linked List
EasyLinked ListRecursion
Watch Solutions81.0% acceptance
217. Contains Duplicate
EasyArrayHash TableSorting
Watch Solutions64.2% acceptance
219. Contains Duplicate II
EasyArrayHash TableSliding Window
Watch Solutions51.6% acceptance
225. Implement Stack using Queues
EasyDesignQueueStack
Watch Solutions70.1% acceptance
226. Invert Binary Tree
EasyBinary TreeBreadth-First SearchDepth-First Search
Watch Solutions80.5% acceptance
232. Implement Queue using Stacks
EasyDesignQueueStack
Watch Solutions70.2% acceptance
234. Palindrome Linked List
EasyLinked ListRecursionStack
Watch Solutions58.8% acceptance
242. Valid Anagram
EasyHash TableSortingString
Watch Solutions68.5% acceptance
243. Shortest Word Distance
EasyArrayString
Watch Solutions66.3% acceptance
246. Strobogrammatic Number
EasyHash TableStringTwo Pointers
Watch Solutions47.6% acceptance
252. Meeting Rooms
EasyArraySorting
Watch Solutions59.4% acceptance
257. Binary Tree Paths
EasyBacktrackingBinary TreeDepth-First Search
Watch Solutions68.9% acceptance
266. Palindrome Permutation
EasyBit ManipulationHash TableString
Watch Solutions68.6% acceptance
268. Missing Number
EasyArrayBinary SearchBit Manipulation
Watch Solutions72.4% acceptance
270. Closest Binary Search Tree Value
EasyBinary SearchBinary Search TreeBinary Tree
Watch Solutions49.2% acceptance
278. First Bad Version
EasyBinary SearchInteractive
Watch Solutions47.5% acceptance
283. Move Zeroes
EasyArrayTwo Pointers
Watch Solutions64.3% acceptance
292. Nim Game
EasyBrainteaserGame TheoryMath
Watch Solutions60.0% acceptance
293. Flip Game
EasyString
Watch Solutions64.8% acceptance
303. Range Sum Query - Immutable
EasyArrayDesignPrefix Sum
Watch Solutions73.5% acceptance
338. Counting Bits
EasyBit ManipulationDynamic Programming
Watch Solutions80.5% acceptance
344. Reverse String
EasyStringTwo Pointers
Watch Solutions81.2% acceptance
345. Reverse Vowels of a String
EasyStringTwo Pointers
Watch Solutions62.1% acceptance
346. Moving Average from Data Stream
EasyArrayData StreamDesign
Watch Solutions80.2% acceptance
359. Logger Rate Limiter
EasyData StreamDesignHash Table
Watch Solutions76.8% acceptance
367. Valid Perfect Square
EasyBinary SearchMath
Watch Solutions44.8% acceptance
374. Guess Number Higher or Lower
EasyBinary SearchInteractive
Watch Solutions57.9% acceptance
383. Ransom Note
EasyCountingHash TableString
Watch Solutions66.3% acceptance
387. First Unique Character in a String
EasyCountingHash TableQueue
Watch Solutions66.4% acceptance
389. Find the Difference
EasyBit ManipulationHash TableSorting
Watch Solutions60.2% acceptance
392. Is Subsequence
EasyDynamic ProgrammingStringTwo Pointers
Watch Solutions48.9% acceptance
401. Binary Watch
EasyBacktrackingBit Manipulation
Watch Solutions65.9% acceptance
408. Valid Word Abbreviation
EasyStringTwo Pointers
Watch Solutions37.0% acceptance
409. Longest Palindrome
EasyGreedyHash TableString
Watch Solutions55.9% acceptance
412. Fizz Buzz
EasyMathSimulationString
Watch Solutions75.9% 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.