Solutions of LeetCode interview questions
| # | Title | Solution | Difficulty | Appeared in Interviews of |
|---|---|---|---|---|
| 1 | Two_Sum | Python C++ |
Medium | Airbnb , Facebook , Amazon , Microsoft , Apple , Yahoo , Dropbox , Bloomberg , Yelp , Adobe , LinkedIn |
| 15 | 3Sum | Python | Medium | Facebook , Google , Amazon , Microsoft , Boomberg , Adobe |
| 24 | Swap Nodes in Pairs | C++ Python |
Medium | Bloomberg , Microsoft , Uber |
| 94 | Binary Tree Inorder Traversal | C++ | Medium | Microsoft |
| 206 | Reverse Linked List | C++ Python |
Easy | Amazon , Apple , Adobe , Bolomberg , Facebook , Microsoft, Snapchat , Twitter , Uber , Yahoo , Yelp , Zenefit |
| 217 | Contains Duplicate | Python C++ |
Easy | Palantir , Airbnb , Yahoo |
| 219 | Contains Duplicate II | Python C++ |
Easy | Palantir , Airbnb , Yahoo |
| 237 | Delete Node in a Linked List | C++ | Easy | Apple , Adobe , Microsoft |
| 258 | Add Digits | C++ | Easy | Microsoft , Adobe |
| 344 | Reverse String | C++ Python |
Easy | Not Appeared yet |
| 724 | Find Pivot Index | C++ Python | Easy | Not Appeared yet |
| # | Important codes you should know | Solution | Description |
|---|---|---|---|
| 1 | How to create Linked list nodes | C++ Python |
Creating three nodes and printing them |
| 2 | Add a Node at the start | Python | Creating nodes and adding node at the start |
| 3 | How to delete Linked list nodes with the key | C++ | With O(n) and O(1) runtime functions |
| 4 | Bubble Sort with Recursion | C++ | With O(n) |
| 5 | Merge Sort with Recursion | C++ | O(n log n) |
| 6 | Stack Basics | C++ | Learn about LIFO |