DSA In 90 Days For Placements! 🔥 Beginner, Medium & Advanced Level Playlist

DSA in 90 Days for Placements (Full Course)! 🔥 Beginner, Medium & Advanced Level! #dsa #leetcode

🚀 DSA in 90 Days for Placements 2025 | Course Outline | Crack Coding Interviews! 💻

Array-1 | 26. Remove Duplicates from Sorted Array | 🔥 Beginner, Medium & Advanced Level! #easy

Array-2 | 121. Best Time to Buy and Sell Stock | 🔥 Beginner, Medium & Advanced Level! #easy

Array-3 | 122. Best Time to Buy and Sell Stock II | 🔥 Beginner, Medium & Advanced Level! #easy

Array-4 | 189. Rotate Array | 🔥 Beginner, Medium & Advanced Level! #easy

Array-5 | 217. Contains Duplicate | 🔥 Beginner, Medium & Advanced Level! #easy

Array-6 | 136. Single Number | 🔥 Beginner, Medium & Advanced Level! #easy

Array-7 | 349. Intersection of Two Arrays | 🔥 Beginner, Medium & Advanced Level! #easy

Array-8 | 350. Intersection of Two Arrays II | 🔥 Beginner, Medium & Advanced Level! #easy

Array-9 | 66. Plus One | 🔥 Beginner, Medium & Advanced Level! #easy

Array-10 | 283. Move Zeroes | 🔥 Beginner, Medium & Advanced Level! #easy

Array-11 | 1. Two Sum | 🔥 Beginner, Medium & Advanced Level! #easy

Array-12 | 36. Valid Sudoku | 🔥 Beginner, Medium & Advanced Level! #easy

Array-13 | 48. Rotate Image | 🔥 Beginner, Medium & Advanced Level! #easy

Array-14 | 48. Rotate Image (Optimised) | 🔥 Beginner, Medium & Advanced Level! #easy

485.1 Max Consecutive Ones (Theory) | #1 | Arrays Playlist | #leetcode #array #dsa #interview

485.2 Max Consecutive Ones (Code) | #1 | Arrays Playlist | #leetcode #array #dsa #interview

1295.1 Find Number with Even Number of Digits(Theory) | #2 | Arrays Playlist | #leetcode #array

1295.2 Find Number with Even Number of Digits (Code) | #2 | Arrays Playlist | #leetcode #array #dsa

977.1 Squares of a Sorted array (Theory) | #3 | Arrays Playlist | #leetcode #array #dsa #interview

977.2 Squares of a Sorted array (Code) | #3 | Arrays Playlist | #leetcode #array #dsa #interview

1089.1 Duplicate Zeros (Theory) | #4 | Arrays Playlist | #leetcode #array #dsa #interview

1089.2 Duplicate Zeros (Code) | #4 | Arrays Playlist | #leetcode #array #dsa #interview

88.1 Merge Sorted Array (Theory) | #5 | Arrays Playlist | #leetcode #array #dsa #interview

88.2 Merge Sorted Array (Code) | #5 | Arrays Playlist | #leetcode #array #dsa #interview

27.1 Remove Element (Theory) | #6 | Arrays Playlist | #dsa #leetcode #interview

27.2 Remove Element (Code) | #6 | Arrays Playlist | #dsa #leetcode #interview

26.1 Remove Duplicates from Sorted Array (Theory) | #7 | Arrays Playlist | #dsa #leetcode #interview

26.2 Remove Duplicates from Sorted Array (Code) | #7 | Arrays Playlist | #dsa #leetcode #interview

1346.1 Check If N and Its Double Exist (Theory) | #8 | Arrays Playlist | #dsa #leetcode #interview

1346.2 Check If N and Its Double Exist (Code) | #8 | Arrays Playlist | #dsa #leetcode #interview

941.1 Valid Mountain Array (Theory) | #9 | Arrays Playlist | Leetcode

941.2 Valid Mountain Array (Code) | #9 | Arrays Playlist | Leetcode

1299.1 Replace Elements with Greatest Element on Right Side(Theory)|#10 | Arrays Playlist | Leetcode

1299.2 Replace Elements with Greatest Element on Right Side(Code) | #10 | Arrays Playlist | Leetcode

283.1 Move Zeroes (Theory) | #11 | Arrays Playlist | Leetcode

283.2 Move Zeroes (Code) | #11 | Arrays Playlist | Leetcode

905.1 Sort Array By Parity (Theory) | #12 | Arrays Playlist | Leetcode

905.2 Sort Array By Parity (Code) | #12 | Arrays Playlist | Leetcode

1051. Height Checker (Theory + Code) | #13 | Arrays Playlist | Leetcode

487.1 Max Consecutive Ones II (Theory) | #14 | Arrays Playlist | Leetcode

487.2 Max Consecutive Ones II (Code) | #14 | Arrays Playlist | Leetcode

414.1 Third Maximum Number (Theory) | #15 | Arrays Playlist | Leetcode

414.2 Third Maximum Number (Code) | #15 | Arrays Playlist | Leetcode

448.1 Find all numbers disappeared in an array (Theory) | #16 | Arrays Playlist | Leetcode

448.2 Find all numbers disappeared in an array (Code) | #16 | Arrays Playlist | Leetcode

724.1 Find Pivot Index (Theory) | #1 | Array And String Playlist | #leetcode #dsa

724.2 Find Pivot Index (Code) | #1 | Array And String Playlist | #leetcode #dsa

747.1 Largest Number At Least Twice Of Others (Theory) | #2 | Array And String Playlist | #leetcode

747.2 Largest Number At Least Twice Of Others (Code) | #2 | Array And String Playlist | #leetcode

66.1 Plus One (Theory) | #3 | Array And String Playlist | #leetcode #dsa #array #strings

66.2 Plus One (Code) | #3 | Array And String Playlist | #leetcode #dsa #array #strings

118.1 Pascal's Triangle (Theory) | #4 | Array And String Playlist | #leetcode #dsa #array #strings

118.2 Pascal's Triangle (Code) | #4 | Array And String Playlist | #leetcode #dsa #array #strings

167.1 Two Sum II - Input Array Is Sorted (Theory) | #6 | Array And String Playlist | #leetcode #dsa

167.2 Two Sum II - Input Array Is Sorted (Code) | #6 | Array And String Playlist | #leetcode #dsa

189.1 Rotate Array (Theory) | #10 | Array And String Playlist | #leetcode #dsa

189.2 Rotate Array (Code) | #10 | Array And String Playlist | #leetcode #dsa

209.1 Minimum Size Subarray Sum (Theory) | #11 | Array And String Playlist | #leetcode #dsa

209.2 Minimum Size Subarray Sum (Code) | #11 | Array And String Playlist | #leetcode #dsa

561.1 Array Partition (Theory) | #12 | Array And String Playlist | #leetcode #dsa

561.2 Array Partition (Code) | #12 | Array And String Playlist | #leetcode #dsa

119.1 Pascal's Triangle II (Theory) | #13 | Array And String Playlist | #leetcode #dsa

119.2 Pascal's Triangle II (Code) | #13 | Array And String Playlist | #leetcode #dsa

54.1 Spiral Matrix (Theory) | #14 | Array And String Playlist | #leetcode #dsa

54.2 Spiral Matrix (Code) | #14 | Array And String Playlist | #leetcode #dsa

67.1 Add Binary (Theory) | #15 | Array And String Playlist | #leetcode #dsa

67.2 Add Binary (Code) | #15 | Array And String Playlist | #leetcode #dsa

498. Diagonal Traverse | #18 | Array And String Playlist

String-1 | 344. Reverse String | 🔥 Beginner, Medium & Advanced Level! #easy

String-2 | 7. Reverse Integer | 🔥 Beginner, Medium & Advanced Level! #easy

String-3 | 387. First Unique Character in a String | 🔥 Beginner, Medium & Advanced Level! #easy

String-4 | 242. Valid Anagram | 🔥 Beginner, Medium & Advanced Level! #easy

String-5 | 125. Valid Palindrome | 🔥 Beginner, Medium & Advanced Level! #easy

String-6 | 8. String to Integer (atoi) | 🔥 Beginner, Medium & Advanced Level! #easy

String-7 | 28. Find the Index of the First Occurrence in a String |🔥Beginner,Medium & Advanced Level

String-8 | 14. Longest Common Prefix | 🔥 Beginner, Medium & Advanced Level! #easy

344.1 Reverse String (Theory) | #5 | Array And String Playlist | #leetcode #dsa #array #strings

344.2 Reverse String (Code) | #5 | Array And String Playlist | #leetcode #dsa #array #strings

151.1 Reverse Words in a String (Theory) | #7 | Array And String Playlist | #leetcode #dsa #strings

151.2 Reverse Words in a String (Code) | #7 | Array And String Playlist | #leetcode #dsa #strings

186.1 Reverse Words in a String II (Theory) | #8 | Array And String Playlist | #leetcode #dsa

186.2 Reverse Words in a String II (Code) | #8 | Array And String Playlist | #leetcode #dsa #string

557.1 Reverse Words in a String III (Theory) | #9 | Array And String Playlist | #leetcode #dsa

557.2 Reverse Words in a String III (Code) | #9 | Array And String Playlist | #leetcode #dsa

14.1 Longest Common Prefix (Theory) | #16 | Array And String Playlist | #leetcode #dsa

14.2 Longest Common Prefix (Code) | #16 | Array And String Playlist | #leetcode #dsa

28.1 Find the Index of the First Occurrence in a String (Theory) | #17 | Array And String Playlist

28.2 Find the Index of the First Occurrence in a String (Code) | #17 | Array And String Playlist

Linked List-1 | 237. Delete Node in a Linked List | 🔥 Beginner, Medium & Advanced Level! #easy

Linked List-2 | 19. Remove Nth Node From End of List | 🔥 Beginner, Medium & Advanced Level! #easy

Linked List-3 | 206. Reverse Linked List | 🔥 Beginner, Medium & Advanced Level! #easy

Linked List-4 | 21. Merge Two Sorted Lists | 🔥 Beginner, Medium & Advanced Level! #easy

Linked List-5 | 234. Palindrome Linked List | 🔥 Beginner, Medium & Advanced Level! #easy

Linked List-6 | 141. Linked List Cycle | 🔥 Beginner, Medium & Advanced Level! #easy

Linked List-7 | Tips & Tricks | 🔥 Beginner, Medium & Advanced Level! #easy

0. Linked List Introduction | #0 | Linked List Playlist | #dsa #leetcode #interview

707.1 Design Linked List (Theory) | #1 | Linked List Playlist | #leetcode #linkedlist #interview

707.2 Design Linked List (Code) | #1 | Linked List Playlist | #leetcode #linkedlist #interview

141.1 Linked List Cycle (Theory) | #2 | Linked List Playlist | #leetcode #linkedlist #interview

141.2 Linked List Cycle (Code) | #2 | Linked List Playlist | #leetcode #linkedlist #interview

142.1 Linked List Cycle II (Theory) | #3 | Linked List Playlist | #leetcode #linkedlist #interview

142.2 Linked List Cycle II (Code) | #3 | Linked List Playlist | #leetcode #linkedlist #interview

160.1 Intersection of Two Linked Lists (Theory) | #4 | Linked List Playlist | #leetcode #linkedlist

160.2 Intersection of Two Linked Lists (Code) | #4 | Linked List Playlist | #leetcode #linkedlist

19.1 Remove Nth Node From End of List (Theory) | #5 | Linked List Playlist | #leetcode #linkedlist

19.2 Remove Nth Node From End of List (Code) | #5 | Linked List Playlist | #leetcode #linkedlist

206.1 Reverse Linked List (Theory) | #6 | Linked List Playlist | #leetcode #linkedlist #dsa

206.2 Reverse Linked List (Code) | #6 | Linked List Playlist | #leetcode #linkedlist #dsa

203.1 Remove Linked List Elements (Theory) | #7 | Linked List Playlist | #leetcode #linkedlist #dsa

203.2 Remove Linked List Elements (Code) | #7 | Linked List Playlist | #leetcode #linkedlist #dsa

328.1 Odd Even Linked List (Theory) | #8 | Linked List Playlist | #leetcode #linkedlist #dsa

328.2 Odd Even Linked List (Code) | #8 | Linked List Playlist | #leetcode #linkedlist #dsa

234.1 Palindrome Linked List (Theory) | #9 | Linked List Playlist | #leetcode #linkedlist #dsa

234.2 Palindrome Linked List (Code) | #9 | Linked List Playlist | #leetcode #linkedlist #dsa

21.1 Merge Two Sorted Lists (Theory) | #10 | Linked List Playlist | #leetcode #linkedlist #dsa

21.2 Merge Two Sorted Lists (Code) | #10 | Linked List Playlist | #leetcode #linkedlist #dsa

2.1 Add Two Numbers (Theory) | #11 | Linked List Playlist | #leetcode #linkedlist #dsa #interview

2.2 Add Two Numbers (Code) | #11 | Linked List Playlist | #leetcode #linkedlist #dsa #interview

708.1 Insert into a Sorted Circular Linked List (Theory) | #12 | Linked List Playlist | #leetcode

708.2 Insert into a Sorted Circular Linked List (Code) | #12 | Linked List Playlist | #leetcode

61.1 Rotate List (Theory) | #13 | Linked List Playlist | #leetcode #dsa #interview

61.2 Rotate List (Code) | #13 | Linked List Playlist | #leetcode #dsa #interview

138.1 Copy List with Random Pointer (Theory) | #14 | Linked List Playlist | #leetcode #dsa

138.2 Copy List with Random Pointer (Code) | #14 | Linked List Playlist | #leetcode #dsa

707.1 Design Doubly Linked List (Theory) | #15 | Linked List Playlist | #leetcode #dsa #interview

707.2 Design Doubly Linked List (Code) | #15 | Linked List Playlist | #leetcode #dsa #interview

430.1 Flatten a Multilevel Doubly Linked List (Theory) | #16 | Linked List Playlist | #leetcode #dsa

430.2 Flatten a Multilevel Doubly Linked List (Code) | #16 | Linked List Playlist | #leetcode #dsa

[MUST WATCH] 705. Design HashSet | #1 | Hash Table Playlist #hashtable #leetcode #algorithms

[MUST WATCH] 706. Design HashMap | #2 | Hash Table Playlist #hashtable #leetcode #algorithms

217. Contains Duplicate | #3 | Hash Table Playlist #hashtable #leetcode #algorithms

136. Single Number | #4 | Hash Table Playlist #hashtable #leetcode #algorithms

202. Happy Number | #7 | Hash Table Playlist #hashtable #leetcode #algorithms

205. Isomorphic Strings | #8 | Hash Table Playlist #hashtable #leetcode #algorithms

599. Minimum Index Sum of Two Lists | #9 | Hash Table Playlist #hashtable #leetcode #algorithms

387. First Unique Character in a String | #10 | Hash Table Playlist #hashtable #leetcode #algorithms

350. Intersection of Two Arrays II | #11 | Hash Table Playlist #hashtable #leetcode #algorithms

219. Contains Duplicate II | #12 | Hash Table Playlist #hashtable #leetcode #algorithms

359. Logger Rate Limiter | #13 | Hash Table Playlist #hashtable #leetcode #algorithms

49. Group Anagrams | #14 | Hash Table Playlist #hashtable #leetcode #algorithms

249. Group Shifted Strings | #15 | Hash Table Playlist #hashtable #leetcode #algorithms

36. Valid Sudoku | #16 | Hash Table Playlist #hashtable #leetcode #algorithms

771. Jewels and Stones | #17 | Hash Table Playlist #hashtable #leetcode #algorithms

454. 4Sum II | #18 | Hash Table Playlist #hashtable #leetcode #algorithms

170. Two Sum III - Data structure design | #19 | HashTable Playlist #hashtable #leetcode #algorithms

347. Top K Frequent Elements | #20 | HashTable Playlist #hashtable #leetcode #algorithms

288. Unique Word Abbreviation | #21 | HashTable Playlist #hashtable #leetcode #algorithms

380. Insert Delete GetRandom O(1) | #22 | HashTable Playlist #hashtable #leetcode #algorithms

3. Longest Substring Without Repeating Characters | #23 | HashTable Playlist #hashtable #leetcode

652. Find Duplicate Subtrees | #24 | HashTable Playlist #hashtable #leetcode

Binary Search-1 | Theory | 🔥 Beginner, Medium & Advanced Level #dsa

Binary Search-2 | 704. Binary Search | 🔥 Beginner, Medium & Advanced Level #dsa

Binary Search-3 | Binary Search Templates | 🔥 Beginner, Medium & Advanced Level #dsa

Binary Search-4 | 34. Find First and Last Position of Element in Sorted Array | 🔥

Binary Search-5 | Template - 1 | 🔥 Beginner, Medium & Advanced Level #dsa

Binary Search-6 | 69. Sqrt(x) | 🔥 Beginner, Medium & Advanced Level #dsa

Binary Search-7 | 374. Guess Number Higher or Lower | 🔥 Beginner, Medium & Advanced Level #dsa

Binary Search-8 | 33. Search in Rotated Sorted Array | 🔥 Beginner, Medium & Advanced Level #dsa

Binary Search-9 | Template-2 | 🔥 Beginner, Medium & Advanced Level #dsa

Binary Search-10 | 278. First Bad Version | 🔥 Beginner, Medium & Advanced Level #dsa

Binary Search-11 | 153. Find Minimum in Rotated Sorted Array | 🔥 Beginner, Medium & Advanced Level

Binary Search-12 | 162. Find Peak Element | 🔥 Beginner, Medium & Advanced Level

Binary Search-13 | 658. Find K Closest Elements | 🔥 Beginner, Medium & Advanced Level #dsa

🚀 COMPLETE DSA in 90 Days for Placements 2025 | Course Outline-2 💻 #dsa

🚀 Top 10 LeetCode Tips & Resources to Ace Coding Interviews! 🔥

Sorting-1 | Theory | 🔥 Beginner, Medium & Advanced Level #dsa

Sorting-2 | Comparison-Based Sort | 🔥 Beginner, Medium & Advanced Level #dsa

Sorting-3 | Selection Sort | 🔥 Beginner, Medium & Advanced Level #dsa

Sorting-4 | 75. Sort Colors (Selection Sort) | 🔥 Beginner, Medium & Advanced Level #dsa

Sorting-5 | Bubble Sort | 🔥 Beginner, Medium & Advanced Level #dsa

Sorting-6 | 1051. Height Checker (Bubble Sort) | 🔥 Beginner, Medium & Advanced Level #dsa

Sorting-7 | Insertion Sort | 🔥 Beginner, Medium & Advanced Level #dsa

Sorting-8 | 1051. Height Checker (Insertion Sort) | 🔥 Beginner, Medium & Advanced Level #dsa

Sorting-9 | 147. Insertion Sort List | 🔥 Beginner, Medium & Advanced Level #dsa

Sorting-10 | Count Sort (Theory) | 🔥 Beginner, Medium & Advanced Level #dsa

Sorting-11 | Count Sort (Template-1) | 🔥 Beginner, Medium & Advanced Level #dsa

Sorting-12 | Count Sort (Template-2) | 🔥 Beginner, Medium & Advanced Level #dsa

Sorting-13 | 75. Sort Colors (Count Sort) | 🔥 Beginner, Medium & Advanced Level #dsa

Sorting-14 | 1200. Minimum Absolute Difference (Sorting) | 🔥 Beginner, Medium & Advanced Level #dsa

Sorting-15 | 1200. Minimum Absolute Difference (Count Sort) | 🔥 Beginner, Medium & Advanced Level

Sorting-16 | Radix Sort (Theory) | 🔥 Beginner, Medium & Advanced Level

Sorting-17 | Radix Sort (Code) | 🔥 Beginner, Medium & Advanced Level

Sorting-18 | 164. Maximum Gap | 🔥 Beginner, Medium & Advanced Level

Sorting-19 | 2343. Query Kth Smallest Trimmed Number (Brute) | 🔥 Beginner, Medium & Advanced Level

Sorting-20 | Bucket Sort (Theory + Code) | 🔥 Beginner, Medium & Advanced Level

[MUST WATCH] Sorting-21 | 2343. Query Kth Smallest Trimmed Number (Optimised)

Math-1 | 412. Fizz Buzz | 🔥 Beginner, Medium & Advanced Level

Math-2 | 326. Power of Three | 🔥 Beginner, Medium & Advanced Level

Math-3 | 204. Count Primes | 🔥 Beginner, Medium & Advanced Level

Math-4 | 13. Roman to Integer | 🔥 Beginner, Medium & Advanced Level

Math-5 | 1232. Check If It Is a Straight Line | 🔥 Beginner, Medium & Advanced Level

Math-6 | 2481. Minimum Cuts to Divide a Circle | 🔥 Beginner, Medium & Advanced Level

Math-7 | 836. Rectangle Overlap | 🔥 Beginner, Medium & Advanced Level

Miscellaneous-1 | 191. Number of 1 Bits | 🔥 Beginner, Medium & Advanced Level

Miscellaneous-2 | 461. Hamming Distance | 🔥 Beginner, Medium & Advanced Level

Miscellaneous-3 | 118. Pascal's Triangle | 🔥 Beginner, Medium & Advanced Level

Miscellaneous-4 | 268. Missing Number | 🔥 Beginner, Medium & Advanced Level

Miscellaneous-5 | 190. Reverse Bits (Bit By Bit) | 🔥 Beginner, Medium & Advanced Level

Miscellaneous-6 | 2's Complement | 🔥 Beginner, Medium & Advanced Level

Miscellaneous-7 | 190. Reverse Bits(Mask & Shift) | 🔥 Beginner, Medium & Advanced Level

Design-1 | 384. Shuffle an Array | 🔥 Beginner, Medium & Advanced Level

Design-2 | Fisher Yates Algorithm | 🔥 Beginner, Medium & Advanced Level

100 FREE DSA Videos (Phase 1 Complete!) | Beginner’s DSA Roadmap for LeetCode & Interviews

Stack - 1 | Introduction to Stacks

Stack - 2 | 155. Min Stack | 3 Approaches

Stack - 3 | 20. Valid Parentheses

Stack - 4 | 739. Daily Temperatures | 3 Approaches

Stack - 5 | 150. Evaluate Reverse Polish Notation

Stack - 6 | 496. Next Greater Element I

Stack - 7 | 503. Next Greater Element II

Stack - 8 | 1 Template to solve Many Problems

Stack - 9 | What are Monotonic Stacks?

Stack - 10 | 42. Trapping Rain Water - 4 Approaches | Brute Force, DP, Stack & Two Pointers ⛈️

Stack - 11 | 84. Largest Rectangle in Histogram - 2 Approaches | Brute Force, Stack

Stack - 12 | 85. Maximal Rectangle

Stack - 13 | 232. Implement Queue using Stacks | Design Problem

Stack - 14 | 394. Decode String

Stack - 15 | 907. Sum of Subarray Minimums | 2 Approaches

Stack - 16 | 735. Asteroid Collision

Stack - 17 | 2104. Sum of Subarray Ranges

Stack - 18 | 402. Remove K Digits

Stack - 19 | 901. Online Stock Span

0. Introduction to Queues | #0 | Queue & Stack Playlist #hashtable #leetcode

[MUST WATCH] 622. Design Circular Queue | #1 | Queue & Stack Playlist #hashtable #leetcode

Queue Methods For Interviews | #2 | Queue & Stack Playlist #queue #stack #leetcode

BFS Algorithm + 2 Templates | #4 | #queue #stack

346. Moving Average from Data Stream | #3 | Queue & Stack Playlist #hashtable #leetcode

200. Number of Islands | #5 | Queue & Stack Playlist #leetcode

✅ Complete Stack Playlist 🚀 | 20 Popular Interview Problems to Master Stacks in DSA | Java | DSA

Heap-1 | Introduction | 🔥 Beginner, Medium & Advanced Level

Heap-2 | Types of Heap | 🔥 Beginner, Medium & Advanced Level

Heap-3 | Heap Intuition | 🔥 Beginner, Medium & Advanced Level

Heap-4 | Heapify, Insert, Delete (Theory) | 🔥 Beginner, Medium & Advanced Level

Heap-5 | Heapify, Insert, Delete (Code) | 🔥 Beginner, Medium & Advanced Level

Heap-6 | Time & Space Complexity | 🔥 Beginner, Medium & Advanced Level

Heap-7 | Heaps In Java | 🔥 Beginner, Medium & Advanced Level

Heap-8 | Heap Sort | 🔥 Beginner, Medium & Advanced Level

Heap-9 | The Top-K Problem (Theory) | 🔥 Beginner, Medium & Advanced Level

Heap-10 | The K-th Element (Theory) | 🔥 Beginner, Medium & Advanced Level

Heap-11 | 215. Kth Largest Element in an Array | 🔥 Beginner, Medium & Advanced Level

Heap-12 | 347. Top K Frequent Elements | 🔥 Beginner, Medium & Advanced Level

Heap-13 | 703. Kth Largest Element in a Stream | 🔥 Beginner, Medium & Advanced Level

Heap-14 | 1046. Last Stone Weight | 🔥 Beginner, Medium & Advanced Level

Heap-15 | Custom Sorting for Heaps and Lists | 🔥 Beginner, Medium & Advanced Level

Heap-16 | 1337. The K Weakest Rows in a Matrix | 🔥 Beginner, Medium & Advanced Level

Heap-17 | 378. Kth Smallest Element in a Sorted Matrix | 🔥 Beginner, Medium & Advanced Level

Heap-18 | 973. K Closest Points to Origin | 🔥 Beginner, Medium & Advanced Level

Heap-19 | 295. Find Median from Data Stream | 🔥 Beginner, Medium & Advanced Level

Heap-20 | 1642. Furthest Building You Can Reach | 🔥 Beginner, Medium & Advanced Level

🚀 Master Heaps in DSA — 20+ Lectures from Scratch + LeetCode Practice

Binary Tree-1 | Theory | 🔥 Beginner, Medium & Advanced Level! #easy

Binary Tree-2 | 144. Binary Tree Preorder Traversal | 🔥 Beginner, Medium & Advanced Level! #easy

Binary Tree-3 | 94. Binary Tree Inorder Traversal | 🔥 Beginner, Medium & Advanced Level! #easy

Binary Tree-4 | 102. Binary Tree Level Order Traversal | 🔥 Beginner, Medium & Advanced Level! #easy

Binary Tree-5 | Top Down Recursion | 🔥 Beginner, Medium & Advanced Level! #easy

Binary Tree-6 | Bottom Up Approach | 🔥 Beginner, Medium & Advanced Level! #easy

Binary Tree-7 | 144. Binary Tree Preorder Traversal (Recursive) | 🔥 Beginner Medium, Advanced Level!

Binary Tree-8 | 94. Binary Tree Inorder Traversal (Recursive) | 🔥 Beginner, Medium, Advanced Level!

Binary Tree-9 | 145. Binary Tree Postorder Traversal (Recursive) | 🔥 Beginner Medium Advanced Level!

Binary Tree-10 | 104. Maximum Depth of Binary Tree (Top Down) | 🔥 Beginner, Medium & Advanced Level!

Binary Tree-11 | 104. Maximum Depth of Binary Tree (Bottom Up) | 🔥 Beginner, Medium & Advanced Level

Binary Tree-12 | 112. Path Sum (Recursive) | 🔥 Beginner, Medium & Advanced Level #dsa

Binary Tree-13 | 112. Path Sum (Iterative) | 🔥 Beginner, Medium & Advanced Level #dsa

Binary Tree-14 | 101. Symmetric Tree (Recursive) | 🔥 Beginner, Medium & Advanced Level #dsa

Binary Tree-15 | 101. Symmetric Tree (Iterative) | 🔥 Beginner, Medium & Advanced Level #dsa

Binary Search Tree - 1 | Introduction | 🔥 Beginner, Medium & Advanced Level

Binary Search Tree - 2 | 700. Search in a Binary Search Tree | 🔥 Beginner, Medium & Advanced Level

Binary Search Tree - 3 | 701. Insert into a Binary Search Tree | 🔥 Beginner, Medium & Advanced Level

Binary Search Tree - 4 | 450. Delete Node in a BST | 🔥 Beginner, Medium & Advanced Level

Binary Search Tree - 5 | 98. Validate Binary Search Tree | 🔥 Beginner, Medium & Advanced Level

Binary Search Tree - 6 | 285. Inorder Successor in BST (Recursive)

Binary Search Tree - 7 | 285. Inorder Successor in BST (Iterative)

Binary Search Tree - 8 | 173. Binary Search Tree Iterator (Recursive)

Binary Search Tree - 9 | 173. Binary Search Tree Iterator (Iterative)

Binary Search Tree - 10 | 703. Kth Largest Element in a Stream (BST Approach)

Binary Search Tree - 11 | 235. Lowest Common Ancestor of a Binary Search Tree

Binary Search Tree - 12 | Height-Balanced BST (Theory)

Binary Search Tree - 13 | 110. Balanced Binary Tree

Binary Search Tree - 14 | 108. Convert Sorted Array to Binary Search Tree

[MUST WATCH] Binary Search Tree - 15 | 220. Contains Duplicate III

🚀 Complete Binary Search Tree Playlist | Master All BST Problems for Interviews (Java + LeetCode)

DSA in 90 Days for Placements (Full Course)! 150 DSA Lectures Completed! 🧠🔥6000+ People Joined! #dsa

Recursion-1 | Introduction

Recursion-2 | 344. Reverse String

Recursion-3 | 1 Recursion Template to solve all problems

Recursion-4 | 24. Swap Nodes in Pairs

Recursion-5 | Recurrence Relation (Theory)

Recursion-6 | 206. Reverse Linked List

Recursion-7 | 700. Search in a Binary Search Tree

Recursion-8 | Memoization + Template

Recursion-9 | 509. Fibonacci Number

Recursion-10 | 70. Climbing Stairs - Recursion + Memoization

Recursion-11 | 119. Pascal's Triangle II - Recursion + Memoization

Recursion-12 | Time Complexity (Theory)

Recursion-13 | Space Complexity (Theory)

Recursion-14 | Tail Recursion (Theory)

Recursion-15 | 50. Pow(x, n)

Recursion-16 | 21. Merge Two Sorted Lists - Iterative + Recursive

Recursion-17 | 779. K-th Symbol in Grammar

Recursion-18 | Tips & Tricks

✅ Complete Recursion Playlist 🔁 | Phase 1 Complete | DSA + Interview Prep

Recursion-19 | Divide & Conquer Algorithm

Recursion-20 | Merge Sort

Recursion-21 | Divide & Conquer (Template)

Recursion-22 | Master Theorem (Akra–Bazzi method)

Recursion-23 | Master Theorem (Akra–Bazzi method) (Practice)

Recursion-24 | 98. Validate Binary Search Tree

Recursion-25 | 240. Search a 2D Matrix II | 3 Approaches

Recursion-26 | Quick Sort | End + Random Pivot

Recursion-27 | What is Backtracking???

Recursion-28 | 51. N-Queens (HARD) | Backtracking

Recursion-29 | 52. N-Queens II (HARD) | Backtracking

Recursion-30 | Master Backtracking: The Only Template You Need

Recursion-31 | 77. Combinations

Recursion-32 | 37. Sudoku Solver

Recursion-33 | Recursive to Iterative Code (Template + Tips & Tricks)

Recursion-34 | 100. Same Tree

Recursion-35 | 22. Generate Parentheses

Recursion-36 | 17. Letter Combinations of a Phone Number

Recursion-37 | 46. Permutations

Dynamic Programming Series | BIGGEST DP Playlist | Java | DSA | Placements | FAANG Interviews #dp

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DP-8 | Multi-Dimensional DP | #8 | DP Playlist #dp #dsa

DP-9 | Top-Down to Bottom Up | #9 | DP Playlist #dp #dsa

DP-10 | 1770. Maximum Score from Performing Multiplication Operations (Part - 1) | #10 | DP Playlist

Ek Nayi Shuruat: The Next Chapter of CTO Bhaiya

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