LeetCode Algorithm (Notes: "🔒" means you need to buy a book from Leetcode)
| # | Title | Solution | Difficulty |
|---|---|---|---|
| 1 | Two Sum | Objective-C, Swift | Easy |
| 9 | Palindrome Number | Objective-C, Swift | Easy |
| 13 | Roman to Integer | Objective-C, Swift | Easy |
| 14 | Longest Common Prefix | Objective-C, Swift | Easy |
| 20 | Valid Parentheses | Objective-C, Swift | Easy |
| 21 | Merge Two Sorted Lists | Objective-C, Swift | Easy |
| 26 | Remove Duplicates from Sorted Array | Objective-C, Swift | Easy |
| 27 | Remove Element | Objective-C, Swift | Easy |
| 28 | Find the Index of the First Occurrence in a String | Objective-C, Swift | Easy |
| 58 | Length of Last Word | Objective-C, Swift | Easy |
| 1342 | Number of Steps to Reduce a Number to Zero | Swift | Easy |