Video Solutions

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.

Filter by Difficulty

1. Two Sum

2. Add Two Numbers

3. Longest Substring Without Repeating Characters

4. Median of Two Sorted Arrays

5. Longest Palindromic Substring

6. Zigzag Conversion

7. Reverse Integer

8. String to Integer (atoi)

9. Palindrome Number

11. Container With Most Water

12. Integer to Roman

13. Roman to Integer

14. Longest Common Prefix

15. 3Sum

16. 3Sum Closest

19. Remove Nth Node From End of List

20. Valid Parentheses

21. Merge Two Sorted Lists

22. Generate Parentheses

23. Merge k Sorted Lists

27. Remove Element

28. Find the Index of the First Occurrence in a String

29. Divide Two Integers

30. Substring with Concatenation of All Words

31. Next Permutation

35. Search Insert Position

37. Sudoku Solver

39. Combination Sum

40. Combination Sum II

43. Multiply Strings

45. Jump Game II

47. Permutations II

49. Group Anagrams

50. Pow(x, n)

Learn DSA with Video Solutions

How to Use Video Solutions Effectively

Video Solutions by Difficulty