FleetCode
Video Solutions
Watch step-by-step video walkthroughs for DSA problems. Learn from expert explanations.
17
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Easy
0
Medium
17
Hard
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3534. Path Existence Queries in a Graph II
HardArrayBinary SearchBit Manipulation
Watch Solutions64.2% acceptance
3539. Find Sum of Array Product of Magical Sequences
HardArrayBit ManipulationBitmask
Watch Solutions61.9% acceptance
3548. Equal Sum Grid Partition II
HardArrayEnumerationHash Table
Watch Solutions39.5% acceptance
3480. Maximize Subarrays After Removing One Conflicting Pair
HardArrayEnumerationPrefix Sum
Watch Solutions64.6% acceptance
3485. Longest Common Prefix of K Strings After Removal
HardArrayStringTrie
Watch Solutions24.3% acceptance
3464. Maximize the Distance Between Points on a Square
HardArrayBinary SearchGeometry
Watch Solutions51.3% acceptance
3509. Maximum Product of Subsequences With an Alternating Sum Equal to K
HardArrayDynamic ProgrammingHash Table
Watch Solutions13.7% acceptance
3463. Check If Digits Are Equal in String After Operations II
HardCombinatoricsMathNumber Theory
Watch Solutions14.3% acceptance
3510. Minimum Pair Removal to Sort Array II
HardArrayDoubly-Linked ListHash Table
Watch Solutions39.1% acceptance
3449. Maximize the Minimum Game Score
HardArrayBinary SearchGreedy
Watch Solutions26.2% acceptance
3445. Maximum Difference Between Even and Odd Frequency II
HardEnumerationPrefix SumSliding Window
Watch Solutions48.7% acceptance
3495. Minimum Operations to Make Array Elements Zero
HardArrayBit ManipulationMath
Watch Solutions60.4% acceptance
3459. Length of Longest V-Shaped Diagonal Segment
HardArrayDynamic ProgrammingMatrix
Watch Solutions56.3% acceptance
3430. Maximum and Minimum Sums of at Most Size K Subarrays
HardArrayMathMonotonic Stack
Watch Solutions25.9% acceptance
3455. Shortest Matching Substring
HardBinary SearchStringString Matching
Watch Solutions24.5% acceptance
3382. Maximum Area Rectangle With Point Constraints II
HardArrayBinary Indexed TreeGeometry
Watch Solutions24.0% acceptance
3410. Maximize Subarray Sum After Removing All Occurrences of One Element
HardArrayDynamic ProgrammingSegment Tree
Watch Solutions23.0% 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.