FleetCode
Video Solutions
Watch step-by-step video walkthroughs for DSA problems. Learn from expert explanations.
45
With Videos
12
Easy
24
Medium
9
Hard
3151. Special Array I
EasyArray
Watch Solutions81.6% acceptance
3152. Special Array II
MediumArrayBinary SearchPrefix Sum
Watch Solutions45.8% acceptance
3153. Sum of Digit Differences of All Pairs
MediumArrayCountingHash Table
Watch Solutions43.3% acceptance
3156. Employee Task Duration and Concurrent Tasks
HardDatabase
Watch Solutions54.0% acceptance
3157. Find the Level of Tree with Minimum Sum
MediumBinary TreeBreadth-First SearchDepth-First Search
Watch Solutions69.6% acceptance
3158. Find the XOR of Numbers Which Appear Twice
EasyArrayBit ManipulationHash Table
Watch Solutions78.9% acceptance
3159. Find Occurrences of an Element in an Array
MediumArrayHash Table
Watch Solutions73.6% acceptance
3160. Find the Number of Distinct Colors Among the Balls
MediumArrayHash TableSimulation
Watch Solutions54.2% acceptance
3161. Block Placement Queries
HardArrayBinary Indexed TreeBinary Search
Watch Solutions41.6% acceptance
3162. Find the Number of Good Pairs I
EasyArrayHash Table
Watch Solutions86.4% acceptance
3163. String Compression III
MediumString
Watch Solutions67.0% acceptance
3164. Find the Number of Good Pairs II
MediumArrayHash Table
Watch Solutions26.6% acceptance
3165. Maximum Sum of Subsequence With Non-adjacent Elements
HardArrayDivide and ConquerDynamic Programming
Watch Solutions15.7% acceptance
3166. Calculate Parking Fees and Duration
MediumDatabase
Watch Solutions53.0% acceptance
3167. Better Compression of String
MediumCountingHash TableSorting
Watch Solutions75.3% acceptance
3168. Minimum Number of Chairs in a Waiting Room
EasySimulationString
Watch Solutions79.3% acceptance
3169. Count Days Without Meetings
MediumArraySorting
Watch Solutions48.1% acceptance
3170. Lexicographically Minimum String After Removing Stars
MediumGreedyHash TableHeap (Priority Queue)
Watch Solutions51.0% acceptance
3172. Second Day Verification
EasyDatabase
Watch Solutions70.7% acceptance
3173. Bitwise OR of Adjacent Elements
EasyArrayBit Manipulation
Watch Solutions94.8% acceptance
3174. Clear Digits
EasySimulationStackString
Watch Solutions82.7% acceptance
3175. Find The First Player to win K Games in a Row
MediumArraySimulation
Watch Solutions40.1% acceptance
3176. Find the Maximum Length of a Good Subsequence I
MediumArrayDynamic ProgrammingHash Table
Watch Solutions32.6% acceptance
3177. Find the Maximum Length of a Good Subsequence II
HardArrayDynamic ProgrammingHash Table
Watch Solutions25.2% acceptance
3179. Find the N-th Value After K Seconds
MediumArrayCombinatoricsMath
Watch Solutions54.0% acceptance
3180. Maximum Total Reward Using Operations I
MediumArrayDynamic Programming
Watch Solutions30.8% acceptance
3181. Maximum Total Reward Using Operations II
HardArrayBit ManipulationDynamic Programming
Watch Solutions21.9% acceptance
3182. Find Top Scoring Students
MediumDatabase
Watch Solutions49.4% acceptance
3183. The Number of Ways to Make the Sum
MediumArrayDynamic Programming
Watch Solutions50.8% acceptance
3184. Count Pairs That Form a Complete Day I
EasyArrayCountingHash Table
Watch Solutions78.0% acceptance
3185. Count Pairs That Form a Complete Day II
MediumArrayCountingHash Table
Watch Solutions43.7% acceptance
3186. Maximum Total Damage With Spell Casting
MediumArrayBinary SearchCounting
Watch Solutions45.1% acceptance
3187. Peaks in Array
HardArrayBinary Indexed TreeSegment Tree
Watch Solutions27.9% acceptance
3188. Find Top Scoring Students II
HardDatabase
Watch Solutions37.8% acceptance
3189. Minimum Moves to Get a Peaceful Board
MediumArrayCounting SortGreedy
Watch Solutions75.9% acceptance
3190. Find Minimum Operations to Make All Elements Divisible by Three
EasyArrayMath
Watch Solutions90.9% acceptance
3191. Minimum Operations to Make Binary Array Elements Equal to One I
MediumArrayBit ManipulationPrefix Sum
Watch Solutions80.4% acceptance
3192. Minimum Operations to Make Binary Array Elements Equal to One II
MediumArrayDynamic ProgrammingGreedy
Watch Solutions65.1% acceptance
3193. Count the Number of Inversions
HardArrayDynamic Programming
Watch Solutions31.9% acceptance
3194. Minimum Average of Smallest and Largest Elements
EasyArraySortingTwo Pointers
Watch Solutions85.4% acceptance
3195. Find the Minimum Area to Cover All Ones I
MediumArrayMatrix
Watch Solutions78.2% acceptance
3196. Maximize Total Cost of Alternating Subarrays
MediumArrayDynamic Programming
Watch Solutions29.6% acceptance
3197. Find the Minimum Area to Cover All Ones II
HardArrayEnumerationMatrix
Watch Solutions63.5% acceptance
3198. Find Cities in Each State
EasyDatabase
Watch Solutions82.5% acceptance
3199. Count Triplets with Even XOR Set Bits I
EasyArrayBit Manipulation
Watch Solutions83.3% 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.