FleetCode
Video Solutions
Watch step-by-step video walkthroughs for DSA problems. Learn from expert explanations.
32
With Videos
6
Easy
15
Medium
11
Hard
3301. Maximize the Total Height of Unique Towers
MediumArrayGreedySorting
Watch Solutions37.3% acceptance
3303. Find the Occurrence of First Almost Equal Substring
HardStringString Matching
Watch Solutions16.0% acceptance
3304. Find the K-th Character in String Game I
EasyBit ManipulationMathRecursion
Watch Solutions81.6% acceptance
3305. Count of Substrings Containing Every Vowel and K Consonants I
MediumHash TableSliding WindowString
Watch Solutions41.8% acceptance
3306. Count of Substrings Containing Every Vowel and K Consonants II
MediumHash TableSliding WindowString
Watch Solutions40.6% acceptance
3307. Find the K-th Character in String Game II
HardBit ManipulationMathRecursion
Watch Solutions48.5% acceptance
3308. Find Top Performing Driver
MediumDatabase
Watch Solutions53.6% acceptance
3312. Sorted GCD Pair Queries
HardArrayBinary SearchCombinatorics
Watch Solutions58.4% acceptance
3314. Construct the Minimum Bitwise Array I
EasyArrayBit Manipulation
Watch Solutions85.3% acceptance
3315. Construct the Minimum Bitwise Array II
MediumArrayBit Manipulation
Watch Solutions66.5% acceptance
3316. Find Maximum Removals From Source String
MediumArrayDynamic ProgrammingHash Table
Watch Solutions39.3% acceptance
3318. Find X-Sum of All K-Long Subarrays I
EasyArrayHash TableHeap (Priority Queue)
Watch Solutions76.1% acceptance
3320. Count The Number of Winning Sequences
HardDynamic ProgrammingString
Watch Solutions32.4% acceptance
3321. Find X-Sum of All K-Long Subarrays II
HardArrayHash TableHeap (Priority Queue)
Watch Solutions41.1% acceptance
3322. Premier League Table Ranking III
MediumDatabase
Watch Solutions73.1% acceptance
3326. Minimum Division Operations to Make Array Non Decreasing
MediumArrayGreedyMath
Watch Solutions29.1% acceptance
3327. Check if DFS Strings Are Palindromes
HardArrayDepth-First SearchHash Function
Watch Solutions20.9% acceptance
3328. Find Cities in Each State II
MediumDatabase
Watch Solutions70.6% acceptance
3330. Find the Original Typed String I
EasyString
Watch Solutions72.1% acceptance
3333. Find the Original Typed String II
HardDynamic ProgrammingPrefix SumString
Watch Solutions45.6% acceptance
3334. Find the Maximum Factor Score of Array
MediumArrayMathNumber Theory
Watch Solutions41.0% acceptance
3335. Total Characters in String After Transformations I
MediumCountingDynamic ProgrammingHash Table
Watch Solutions45.7% acceptance
3336. Find the Number of Subsequences With Equal GCD
HardArrayDynamic ProgrammingMath
Watch Solutions66.7% acceptance
3337. Total Characters in String After Transformations II
HardCountingDynamic ProgrammingHash Table
Watch Solutions58.0% acceptance
3338. Second Highest Salary II
MediumDatabase
Watch Solutions92.3% acceptance
3340. Check Balanced String
EasyString
Watch Solutions82.9% acceptance
3341. Find Minimum Time to Reach Last Room I
MediumArrayGraphHeap (Priority Queue)
Watch Solutions55.5% acceptance
3343. Count Number of Balanced Permutations
HardCombinatoricsDynamic ProgrammingMath
Watch Solutions49.1% acceptance
3346. Maximum Frequency of an Element After Performing Operations I
MediumArrayBinary SearchPrefix Sum
Watch Solutions40.1% acceptance
3347. Maximum Frequency of an Element After Performing Operations II
HardArrayBinary SearchPrefix Sum
Watch Solutions53.8% acceptance
3349. Adjacent Increasing Subarrays Detection I
EasyArray
Watch Solutions48.0% acceptance
3350. Adjacent Increasing Subarrays Detection II
MediumArrayBinary Search
Watch Solutions58.9% 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.