FleetCode
Video Solutions
Watch step-by-step video walkthroughs for DSA problems. Learn from expert explanations.
20
With Videos
4
Easy
11
Medium
5
Hard
3752. Lexicographically Smallest Negated Permutation that Sums to Target
MediumArrayGreedyMath
Watch Solutions31.5% acceptance
3739. Count Subarrays With Majority Element II
HardArrayDivide and ConquerHash Table
Watch Solutions65.2% acceptance
3737. Count Subarrays With Majority Element I
MediumArrayCountingDivide and Conquer
Watch Solutions75.7% acceptance
3786. Total Sum of Interaction Cost in Tree Groups
HardArrayDepth-First SearchTree
Watch Solutions54.3% acceptance
3815. Design Auction System
MediumDesignHash TableHeap (Priority Queue)
Watch Solutions41.9% acceptance
3785. Minimum Swaps to Avoid Forbidden Values
HardArrayCountingGreedy
Watch Solutions31.0% acceptance
3687. Library Late Fee Calculator
EasyArraySimulation
Watch Solutions94.4% acceptance
3709. Design Exam Scores Tracker
MediumArrayBinary SearchDesign
Watch Solutions44.0% acceptance
3701. Compute Alternating Sum
EasyArraySimulation
Watch Solutions89.8% acceptance
3714. Longest Balanced Substring II
MediumHash TablePrefix SumString
Watch Solutions42.0% acceptance
3713. Longest Balanced Substring I
MediumCountingEnumerationHash Table
Watch Solutions69.7% acceptance
3747. Count Distinct Integers After Removing Zeros
MediumDynamic ProgrammingMath
Watch Solutions23.1% acceptance
3707. Equal Score Substrings
EasyPrefix SumString
Watch Solutions56.7% acceptance
3721. Longest Balanced Subarray II
HardArrayDivide and ConquerHash Table
Watch Solutions33.7% acceptance
3719. Longest Balanced Subarray I
MediumArrayDivide and ConquerHash Table
Watch Solutions65.6% acceptance
3697. Compute Decimal Representation
EasyArrayMath
Watch Solutions64.7% acceptance
3686. Number of Stable Subsequences
HardArrayDynamic Programming
Watch Solutions60.2% acceptance
3857. Minimum Cost to Split into Ones
MediumDynamic ProgrammingMath
Watch Solutions82.6% acceptance
3694. Distinct Points Reachable After Substring Removal
MediumHash TablePrefix SumSliding Window
Watch Solutions53.9% acceptance
3776. Minimum Moves to Balance Circular Array
MediumArrayGreedySorting
Watch Solutions40.2% 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.