| Index | Problems | Difficulty | Status |

|---| -----------| ---------- | -------- |

|1| Two Sum|Easy|🥕|

|3| Longest Substring Without Repeating Characters|Medium

|4| Median of Two Sorted Arrays|Hard

|5| Longest Palindromic Substring|Medium

|6| Zigzag Conversion|Medium

|8| String to Integer (atoi)|Medium

|9| Palindrome Number|Easy |🥕|

|10| Regular Expression Matching|Hard