| # | Title | Topics | Acceptance | Solution | Difficulty |
|---|---|---|---|---|---|
| 1 | Flood Fill | Recursion | 69.00% | Medium | |
| 2 | Number of Islands | Recursion | 66.00% | Medium | |
| 3 | Remove Consecutive Duplicates | Recursion | 60.00% | Easy | |
| 4 | Binary Tree Post Order Traversal | Tree Recursion Traversal Binary Tree | 79.59% | Easy | |
| 5 | Binary Tree Zigzag Level Order Traversal | Tree Recursion Traversal Binary Tree | 71.48% | Medium | |
| 6 | Binary Tree Level Order Traversal | Tree Recursion Traversal Binary Tree | 79.68% | Easy | |
| 7 | Binary Tree Inorder Traversal | Recursion Trees Traversal Binary Tree | 75.68% | Easy | |
| 8 | Binary Tree Preorder Traversal | Tree Recursion Binary Tree | 79.85% | Easy | |
| 9 | Intersection of Two Linked Lists | Linked List | 75.00% | Medium | |
| 10 | Sort A Linked List (Merge Sort) | Linked List | 58.00% | Medium | |
| 11 | Merge K Sorted Lists | Linked List | 70.00% | Medium | |
| 12 | Swap Nodes in Pairs | Linked List | 65.00% | Medium | |
| 13 | Reverse Sublist (Between Left & Right) | Linked List | 67.00% | Medium | |
| 14 | Reverse Linked List in K Groups | Linked List | 60.00% | Medium | |
| 15 | Reverse Linked List in Pairs | Linked List | 63.00% | Medium | |
| 16 | Remove Nth Node From End | Linked List | 73.00% | Medium | |
| 17 | Check if Linked List is Palindrome | Linked List | 67.00% | Medium | |
| 18 | Detect Cycle In Linked List | Linked List | 65.00% | Medium | |
| 19 | Find Start of Cycle | Linked List | 57.00% | Medium | |
| 20 | Reverse A Linked List | Linked List | 79.00% | Easy | |
| 21 | Length of Linked List | Linked List | 76.00% | Easy | |
| 22 | Nth Node From End | Linked List | 69.00% | Medium | |
| 23 | Find Middle of Linked List | Linked List | 87.00% | Easy | |
| 24 | Search in a 2D Matrix | Recursion Binary Search | 86.00% | Medium | |
| 25 | Find Minimum In Rotated Sorted Array | Recursion | 89.00% | Medium | |
| 26 | Peak Element In Rotated Array | Recursion | 88.00% | Easy | |
| 27 | Generate All Subsequence | Recursion | 56.00% | Medium | |
| 28 | Check if Binary Tree is Balanced | Recursion | 77.00% | Medium | |
| 29 | Generate All Subsets | Recursion | 60.00% | Medium | |
| 30 | Count Nodes in Binary Tree | Recursion | 64.00% | Medium | |
| 31 | Letter Combinations of Phone Number | Recursion | 60.00% | Medium | |
| 32 | Tiling Problem | Recursion | 50.00% | Medium | |
| 33 | Permutation Without Duplicates | Recursion | 67.00% | Medium | |
| 34 | Combination Sum II | Recursion | 76.00% | Medium | |
| 35 | Target Sum Ways | Recursion | 64.00% | Hard | |
| 36 | Partition Equal Subset | Recursion | 77.00% | Easy | |
| 37 | Unique Path | Recursion | 56.00% | Hard | |
| 38 | Rat In A Maze | Recursion | 38.00% | Hard | |
| 39 | Permutation of an Array | Array Recursion | 68.00% | Medium | |
| 40 | Permutation of A String | String Recursion | 66.00% | Medium | |
| 41 | Subsets with Duplicates | Recursion | 74.00% | Medium | |
| 42 | Factorial of N | Recursion | 60.00% | Easy | |
| 43 | Count Ways To Reach Nth Stair | Recursion | 60.00% | Medium | |
| 44 | Friends Pairing Problem | Recursion | 50.00% | Medium | |
| 45 | Count Binary Strings | Recursion | 60.00% | Medium | |
| 46 | Fibonacci Series (Tree Recursion) | Recursion | 60.00% | Medium | |
| 47 | Check String Is Subsequence To Another | Recursion | 75.00% | Medium | |
| 48 | Convert String to Integer | Recursion | 60.00% | Medium | |
| 49 | Replace pi to 3.14 | Recursion | 75.00% | Easy | |
| 50 | Remove All Occurrence of A Character | Recursion | 75.00% | Easy |
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