FleetCode
Video Solutions
Watch step-by-step video walkthroughs for DSA problems. Learn from expert explanations.
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Easy
33
Medium
0
Hard
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167. Two Sum II - Input Array Is Sorted
MediumArrayBinary SearchTwo Pointers
Watch Solutions65.5% acceptance
172. Factorial Trailing Zeroes
MediumMath
Watch Solutions46.9% acceptance
176. Second Highest Salary
MediumDatabase
Watch Solutions42.2% acceptance
177. Nth Highest Salary
MediumDatabase
Watch Solutions38.0% acceptance
178. Rank Scores
MediumDatabase
Watch Solutions63.9% acceptance
179. Largest Number
MediumArrayGreedySorting
Watch Solutions43.3% acceptance
180. Consecutive Numbers
MediumDatabase
Watch Solutions44.6% acceptance
184. Department Highest Salary
MediumDatabase
Watch Solutions53.2% acceptance
186. Reverse Words in a String II
MediumStringTwo Pointers
Watch Solutions56.6% acceptance
187. Repeated DNA Sequences
MediumBit ManipulationHash FunctionHash Table
Watch Solutions53.7% acceptance
189. Rotate Array
MediumArrayMathTwo Pointers
Watch Solutions45.3% acceptance
192. Word Frequency
MediumShell
Watch Solutions26.3% acceptance
194. Transpose File
MediumShell
Watch Solutions27.1% acceptance
199. Binary Tree Right Side View
MediumBinary TreeBreadth-First SearchDepth-First Search
Watch Solutions70.9% acceptance
200. Number of Islands
MediumArrayBreadth-First SearchDepth-First Search
Watch Solutions65.2% acceptance
201. Bitwise AND of Numbers Range
MediumBit Manipulation
Watch Solutions48.8% acceptance
210. Course Schedule II
MediumBreadth-First SearchDepth-First SearchGraph
Watch Solutions56.3% acceptance
215. Kth Largest Element in an Array
MediumArrayDivide and ConquerHeap (Priority Queue)
Watch Solutions68.8% acceptance
227. Basic Calculator II
MediumMathStackString
Watch Solutions46.7% acceptance
229. Majority Element II
MediumArrayCountingHash Table
Watch Solutions56.5% 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
244. Shortest Word Distance II
MediumArrayDesignHash Table
Watch Solutions62.8% acceptance
245. Shortest Word Distance III
MediumArrayString
Watch Solutions59.4% acceptance
247. Strobogrammatic Number II
MediumArrayRecursionString
Watch Solutions53.5% acceptance
249. Group Shifted Strings
MediumArrayHash TableString
Watch Solutions67.8% acceptance
250. Count Univalue Subtrees
MediumBinary TreeDepth-First SearchTree
Watch Solutions57.5% acceptance
251. Flatten 2D Vector
MediumArrayDesignIterator
Watch Solutions50.5% acceptance
253. Meeting Rooms II
MediumArrayGreedyHeap (Priority Queue)
Watch Solutions52.6% acceptance
254. Factor Combinations
MediumBacktracking
Watch Solutions50.5% acceptance
255. Verify Preorder Sequence in Binary Search Tree
MediumArrayBinary Search TreeBinary Tree
Watch Solutions51.7% acceptance
256. Paint House
MediumArrayDynamic Programming
Watch Solutions64.3% acceptance
259. 3Sum Smaller
MediumArrayBinary SearchSorting
Watch Solutions51.4% 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.