Two pointers

Author: joffilyfe

README.md

@@ -1,6 +1,7 @@
 | Problem Number | Tag                    | URL                                                                                  |
 | -------------- | ---------------------- | ------------------------------------------------------------------------------------ |
 | 1.py           | Hash table             | https://leetcode.com/problems/two-sum/                                               |
+| 15.py          | Two pointers           | https://leetcode.com/problems/3sum/                                                  |
 | 35.py          | Binary Search          | https://leetcode.com/problems/search-insert-position/                                |
 | 167.py         | Two pointers           | https://leetcode.com/problems/two-sum-ii-input-array-is-sorted/                      |
 | 888.py         | Hash table             | https://leetcode.com/problems/fair-candy-swap                                        |