FleetCode
Video Solutions
Watch step-by-step video walkthroughs for DSA problems. Learn from expert explanations.
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1995. Count Special Quadruplets
EasyArrayEnumerationHash Table
Watch Solutions64.5% acceptance
2000. Reverse Prefix of Word
EasyStackStringTwo Pointers
Watch Solutions86.3% acceptance
2006. Count Number of Pairs With Absolute Difference K
EasyArrayCountingHash Table
Watch Solutions85.4% acceptance
2011. Final Value of Variable After Performing Operations
EasyArraySimulationString
Watch Solutions90.6% acceptance
2016. Maximum Difference Between Increasing Elements
EasyArray
Watch Solutions66.5% acceptance
2022. Convert 1D Array Into 2D Array
EasyArrayMatrixSimulation
Watch Solutions72.2% acceptance
2026. Low-Quality Problems
EasyDatabase
Watch Solutions84.3% acceptance
2032. Two Out of Three
EasyArrayBit ManipulationHash Table
Watch Solutions77.5% acceptance
2037. Minimum Number of Moves to Seat Everyone
EasyArrayCounting SortGreedy
Watch Solutions87.4% acceptance
2047. Number of Valid Words in a Sentence
EasyString
Watch Solutions31.0% acceptance
2053. Kth Distinct String in an Array
EasyArrayCountingHash Table
Watch Solutions82.1% acceptance
2072. The Winner University
EasyDatabase
Watch Solutions74.5% acceptance
2073. Time Needed to Buy Tickets
EasyArrayQueueSimulation
Watch Solutions72.9% acceptance
2078. Two Furthest Houses With Different Colors
EasyArrayGreedy
Watch Solutions71.8% acceptance
2082. The Number of Rich Customers
EasyDatabase
Watch Solutions77.3% acceptance
2085. Count Common Words With One Occurrence
EasyArrayCountingHash Table
Watch Solutions73.3% acceptance
2089. Find Target Indices After Sorting Array
EasyArrayBinary SearchSorting
Watch Solutions77.9% acceptance
2094. Finding 3-Digit Even Numbers
EasyArrayEnumerationHash Table
Watch Solutions78.8% acceptance
2099. Find Subsequence of Length K With the Largest Sum
EasyArrayHash TableHeap (Priority Queue)
Watch Solutions57.4% acceptance
2103. Rings and Rods
EasyHash TableString
Watch Solutions81.5% acceptance
2108. Find First Palindromic String in the Array
EasyArrayStringTwo Pointers
Watch Solutions83.9% acceptance
2114. Maximum Number of Words Found in Sentences
EasyArrayString
Watch Solutions86.6% acceptance
2124. Check if All A's Appears Before All B's
EasyString
Watch Solutions73.2% acceptance
2133. Check if Every Row and Column Contains All Numbers
EasyArrayHash TableMatrix
Watch Solutions54.0% acceptance
2138. Divide a String Into Groups of Size k
EasySimulationString
Watch Solutions77.1% acceptance
2144. Minimum Cost of Buying Candies With Discount
EasyArrayGreedySorting
Watch Solutions71.5% acceptance
2148. Count Elements With Strictly Smaller and Greater Elements
EasyArrayCountingSorting
Watch Solutions59.9% acceptance
2154. Keep Multiplying Found Values by Two
EasyArrayHash TableSimulation
Watch Solutions75.1% acceptance
2160. Minimum Sum of Four Digit Number After Splitting Digits
EasyGreedyMathSorting
Watch Solutions86.2% acceptance
2164. Sort Even and Odd Indices Independently
EasyArraySorting
Watch Solutions63.2% acceptance
2169. Count Operations to Obtain Zero
EasyMathSimulation
Watch Solutions79.8% acceptance
2176. Count Equal and Divisible Pairs in an Array
EasyArray
Watch Solutions84.0% acceptance
2180. Count Integers With Even Digit Sum
EasyMathSimulation
Watch Solutions70.5% acceptance
2185. Counting Words With a Given Prefix
EasyArrayStringString Matching
Watch Solutions84.5% acceptance
2190. Most Frequent Number Following Key In an Array
EasyArrayCountingHash Table
Watch Solutions59.6% acceptance
2194. Cells in a Range on an Excel Sheet
EasyString
Watch Solutions83.9% acceptance
2200. Find All K-Distant Indices in an Array
EasyArrayTwo Pointers
Watch Solutions77.4% acceptance
2205. The Number of Users That Are Eligible for Discount
EasyDatabase
Watch Solutions50.3% acceptance
2206. Divide Array Into Equal Pairs
EasyArrayBit ManipulationCounting
Watch Solutions79.2% acceptance
2210. Count Hills and Valleys in an Array
EasyArray
Watch Solutions69.1% acceptance
2215. Find the Difference of Two Arrays
EasyArrayHash Table
Watch Solutions81.4% 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.