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Video Solutions

Watch step-by-step video walkthroughs for DSA problems. Learn from expert explanations.

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415. Add Strings

EasyMathSimulationString
Watch Solutions52.1% acceptance

422. Valid Word Square

EasyArrayMatrix
Watch Solutions42.9% acceptance

441. Arranging Coins

EasyBinary SearchMath
Watch Solutions48.1% acceptance

448. Find All Numbers Disappeared in an Array

EasyArrayHash Table
Watch Solutions64.4% acceptance

461. Hamming Distance

EasyBit Manipulation
Watch Solutions76.7% acceptance

463. Island Perimeter

EasyArrayBreadth-First SearchDepth-First Search
Watch Solutions74.3% acceptance

476. Number Complement

EasyBit Manipulation
Watch Solutions70.3% acceptance

495. Teemo Attacking

EasyArraySimulation
Watch Solutions57.6% acceptance

496. Next Greater Element I

EasyArrayHash TableMonotonic Stack
Watch Solutions76.5% acceptance

511. Game Play Analysis I

EasyDatabase
Watch Solutions75.1% acceptance

512. Game Play Analysis II

EasyDatabase
Watch Solutions53.4% acceptance

520. Detect Capital

EasyString
Watch Solutions56.8% acceptance

530. Minimum Absolute Difference in BST

EasyBinary Search TreeBinary TreeBreadth-First Search
Watch Solutions59.3% acceptance

541. Reverse String II

EasyStringTwo Pointers
Watch Solutions54.1% acceptance

543. Diameter of Binary Tree

EasyBinary TreeDepth-First SearchTree
Watch Solutions65.8% acceptance

551. Student Attendance Record I

EasyString
Watch Solutions50.1% acceptance

557. Reverse Words in a String III

EasyStringTwo Pointers
Watch Solutions84.0% acceptance

559. Maximum Depth of N-ary Tree

EasyBreadth-First SearchDepth-First SearchTree
Watch Solutions73.5% acceptance

577. Employee Bonus

EasyDatabase
Watch Solutions76.7% acceptance

584. Find Customer Referee

EasyDatabase
Watch Solutions71.2% acceptance

586. Customer Placing the Largest Number of Orders

EasyDatabase
Watch Solutions64.6% acceptance

589. N-ary Tree Preorder Traversal

EasyDepth-First SearchStackTree
Watch Solutions76.7% acceptance

590. N-ary Tree Postorder Traversal

EasyDepth-First SearchStackTree
Watch Solutions81.0% acceptance

595. Big Countries

EasyDatabase
Watch Solutions68.2% acceptance

596. Classes More Than 5 Students

EasyDatabase
Watch Solutions58.4% acceptance

597. Friend Requests I: Overall Acceptance Rate

EasyDatabase
Watch Solutions41.6% acceptance

599. Minimum Index Sum of Two Lists

EasyArrayHash TableString
Watch Solutions60.2% acceptance

603. Consecutive Available Seats

EasyDatabase
Watch Solutions65.7% acceptance

605. Can Place Flowers

EasyArrayGreedy
Watch Solutions28.8% acceptance
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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.