Lecture 21. Java Sudoku Solver | Backtracking |

Lecture 22. Merge Sort | For Beginners

Lecture 23. Quick Sort For Beginners

Lecture 24. Java OOPs in One Shot | Object Oriented Programming | Java Language

Lecture 25. ArrayList In Java + Notes

Lecture 26. Java Collections Framework

Lecture 27. Introduction to Linked List | Data Structures & Algorithms

Lecture 28. How to Reverse a Linked List? | Iterative + Recursive

Lecture 29. Most IMPORTANT Linked List Questions for Placements

Lecture 30. Stack Data Structure in One Video

Lecture 31. Complete Queue Data Structure | in One Shot

Lecture 33. Binary Search Trees | BST in One Video Data Structures & Algorithms

Lecture 34. HashSet in Java | Hashing | Data Structures & Algorithms

Lecture 35. HashMap in Java | Hashing | Data Structures & Algorithms

Lecture 36. HashMap Implementation in Java | HashMap

Lecture 37. Hashing in Java | One Shot |

Lecture 38. Trie Data Structure

Lecture 39. Graph Data Structure | Tutorial for Graphs in Data Structures