Easy Understanding | Explaining with picture | Log
\n\n\n
![image](https://assets.leetcode.com/users/images/8a87d02c-75df-40c6-81d0-af06ca8d2e87_1660992912.942108.jpeg)\n![image](https://assets.leetcode.com/users/images/d5d113fe-99a3-4029-b5f8-0567ae38b5b8_1660992939.252564.jpeg)\n\n
['Math', 'Java']