FleetCode
Video Solutions
Watch step-by-step video walkthroughs for DSA problems. Learn from expert explanations.
28
With Videos
11
Easy
12
Medium
5
Hard
201. Bitwise AND of Numbers Range
MediumBit Manipulation
Watch Solutions48.8% acceptance
202. Happy Number
EasyHash TableMathTwo Pointers
Watch Solutions60.0% acceptance
206. Reverse Linked List
EasyLinked ListRecursion
Watch Solutions81.0% acceptance
210. Course Schedule II
MediumBreadth-First SearchDepth-First SearchGraph
Watch Solutions56.3% acceptance
212. Word Search II
HardArrayBacktrackingMatrix
Watch Solutions38.8% acceptance
214. Shortest Palindrome
HardHash FunctionRolling HashString
Watch Solutions42.7% acceptance
215. Kth Largest Element in an Array
MediumArrayDivide and ConquerHeap (Priority Queue)
Watch Solutions68.8% acceptance
217. Contains Duplicate
EasyArrayHash TableSorting
Watch Solutions64.2% acceptance
219. Contains Duplicate II
EasyArrayHash TableSliding Window
Watch Solutions51.6% acceptance
224. Basic Calculator
HardMathRecursionStack
Watch Solutions46.7% 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
227. Basic Calculator II
MediumMathStackString
Watch Solutions46.7% acceptance
229. Majority Element II
MediumArrayCountingHash Table
Watch Solutions56.5% acceptance
232. Implement Queue using Stacks
EasyDesignQueueStack
Watch Solutions70.2% acceptance
233. Number of Digit One
HardDynamic ProgrammingMathRecursion
Watch Solutions39.3% acceptance
234. Palindrome Linked List
EasyLinked ListRecursionStack
Watch Solutions58.8% acceptance
238. Product of Array Except Self
MediumArrayPrefix Sum
Watch Solutions69.3% acceptance
240. Search a 2D Matrix II
MediumArrayBinary SearchDivide and Conquer
Watch Solutions57.6% acceptance
242. Valid Anagram
EasyHash TableSortingString
Watch Solutions68.5% acceptance
243. Shortest Word Distance
EasyArrayString
Watch Solutions66.3% acceptance
244. Shortest Word Distance II
MediumArrayDesignHash Table
Watch Solutions62.8% acceptance
245. Shortest Word Distance III
MediumArrayString
Watch Solutions59.4% acceptance
246. Strobogrammatic Number
EasyHash TableStringTwo Pointers
Watch Solutions47.6% acceptance
247. Strobogrammatic Number II
MediumArrayRecursionString
Watch Solutions53.5% acceptance
248. Strobogrammatic Number III
HardArrayRecursionString
Watch Solutions42.3% acceptance
249. Group Shifted Strings
MediumArrayHash TableString
Watch Solutions67.8% acceptance
250. Count Univalue Subtrees
MediumBinary TreeDepth-First SearchTree
Watch Solutions57.5% 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.