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| # | Title | CPP Solution | Python Solution | Difficulty | 
|---|---|---|---|---|
| 1 | Two Sum | C++ | Python | Medium | 
| 2 | Add Two Numbers | C++ | Python | Medium | 
| 3 | Longest Substring Without Repeating Characters | C++ | Python | Medium | 
| 4 | Median of Two Sorted Arrays | C++ | Python | Hard | 
| 5 | longest Palindromic Substring | C++ | Python | Medium | 
| 6 | ZigZag Conversion | C++ | Python | Easy | 
| 7 | Reverse integer | C++ | Python | Easy | 
| 8 | String to Integer(atoi) | C++ | Python | Easy |