| 34 | Find First And Last Position Of Element In Sorted Array | Medium | Arrays, Binary Search | Blog | | Java, Python, JavaScript, Kotlin |
| 33 | Search In Rotated Sorted Array | Medium | Arrays, Binary Search | Blog | | Java, Python, JavaScript, Kotlin |
| 32 | Longest Valid Parentheses | Hard | String | Blog | | Java, Python, JavaScript, Kotlin |
| 31 | Next Permutation | Medium | Arrays | Blog | | Java, Python, JavaScript, Kotlin |
| 30 | Divide Two Integers | Hard | Sliding Window, Hashing, String | Blog | | Java, Python, JavaScript, Kotlin |
| 29 | Divide Two Integers | Medium | Bit Manipulations | Blog | | Java, Python, JavaScript, Kotlin |
| 28 | Implement StrStr | Easy | String, Sliding Window | Blog | | Java, Python, JavaScript, Kotlin |
| 27 | Remove Element | Easy | Array | Blog | | Java, Python, JavaScript, Kotlin |
| 26 | Remove Duplicates From Sorted Array | Easy | Array | Blog | | Java, Python, JavaScript, Kotlin |
| 25 | Reverse Nodes In K Group | Hard | Linked List | Blog | | Java, Python, JavaScript, Kotlin |
| 24 | Swap Nodes In Pairs | Medium | Linked List | Blog | | Java, Python, JavaScript, Kotlin |
| 23 | Merge K Sorted Lists | Hard | Merge Sort, Divide and Conquer | Blog | | Java, Python, JavaScript, Kotlin |
| 22 | Generate Parentheses | Medium | Recursion, Backtracking | Blog | | Java, Python, JavaScript, Kotlin |
| 21 | Merge Two Sorted Lists | Easy | Linked List | Blog | | Java, Python, JavaScript, Kotlin |
| 20 | Valid Parentheses | Easy | String, Stack | Blog | | Java, Python, JavaScript, Kotlin |
| 19 | Remove Nth Node From End Of List | Medium | Linked List, Two Pointer Technique | Blog | | Java, Python, JavaScript, Kotlin |
| 18 | 3 Sum | Medium | Arrays | Blog | | Java, Python, JavaScript, Kotlin |
| 17 | Letter Combinations Of A Phone Number | Medium | String, Recursion, BFS, DFS | Blog | | Java, Python, JavaScript, Kotlin |
| 16 | 3 Sum Closest | Medium | Arrays | Blog | | Java, Python, JavaScript, Kotlin |
| 15 | 3 Sum | Medium | Arrays | Blog | | Java, Python, JavaScript, Kotlin |
| 14 | Longest Common Prefix | Easy | String, LCP | Blog | | Java, Python, JavaScript, Kotlin |
| 13 | Roman To Integer | Easy | String | Blog | | Java, Python, JavaScript, Kotlin |
| 12 | Integer To Roman | Medium | Array | Blog | | Java, Python, JavaScript, Kotlin |
| 11 | Regular Expression Matching | Medium | Array | Blog | | Java, Python, JavaScript, Kotlin |
| 10 | Regular Expression Matching | Hard | String, Dynamic Programming | Blog | | Java, Python, JavaScript, Kotlin |
| 9 | Palindrome Number | Easy | Palindrome, Number | Blog | | Java, Python, JavaScript, Kotlin |
| 8 | String To Integer (atoi) | Medium | String | Blog | | Java, Python, JavaScript, Kotlin |
| 7 | Reverse Integer | Easy | Number | Blog | | Java, Python, JavaScript, Kotlin |
| 6 | ZigZag Conversion | Medium | String | Blog | | Java, Python, JavaScript, Kotlin |
| 5 | Longest Palindromic Substring | Medium | String, Manacher's Algorithm | Blog | | Java, Python, JavaScript, Kotlin |
| 4 | Median Of Two Sorted Arrays | Hard | Arrays, Binary Search | Blog | | Java, Python, JavaScript, Kotlin |
| 3 | Longest Substring Without Repeating Characters | Medium | String, Sliding Window | Blog | | Java, Python, JavaScript, Kotlin |
| 2 | Add Two Numbers | Medium | Linked List | Blog | | Java, Python, JavaScript, Kotlin |
| 1 | Two Sum | Easy | HashMap | Blog | | Java, Python, JavaScript, Kotlin |
