Roman numeral to integer
Question
Given a Roman numeral string, write a function that returns the corresponding integer value. Keep in mind that Roman numerals also use subtractive notion, for example, IV corresponds to 4.
Below are the values for Roman numerals:
| Symbol | Value |
|---|---|
| I | 1 |
| V | 5 |
| X | 10 |
| L | 50 |
| C | 100 |
| D | 500 |
| M | 1000 |