Clone this project:
| OS | Command |
|---|---|
| Mac | git clone https://github.com/equiman/tdd_roman_js.git ~/Development/Jest/tdd_roman_js |
| Linux | git clone https://github.com/equiman/tdd_roman_js.git ~/Development/Jest/tdd_roman_js |
| Win | git clone https://github.com/equiman/tdd_roman_js.git D:\Development\Jest\tdd_roman_js |
Install NPM dependencies:
npm i
- Node (with NPM)
- Visual Studio Code
| 1 | 5 | 10 | 50 | 100 | 500 | 1000 |
|---|---|---|---|---|---|---|
| I | V | X | L | C | D | M |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
|---|---|---|---|---|---|---|---|---|
| I | II | III | IV | V | VI | VII | VIII | IX |
| 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 | 90 |
|---|---|---|---|---|---|---|---|---|
| X | XX | XXX | XL | L | LX | LXX | LXXX | XC |
| 100 | 200 | 300 | 400 | 500 | 600 | 700 | 800 | 900 |
|---|---|---|---|---|---|---|---|---|
| C | CC | CCC | CD | D | DC | DCC | DCCC | CM |
To convert Roman Numerals we need to split it up into place values (ones, tens, hundreds, etc.). Example 999
| Place Value | Number | Roman Numeral |
|---|---|---|
| Hundreds | 900 | CM |
| Tens | 90 | XC |
| Ones | 9 | IX |
You then combine them all together (starting from the top) to get CMXCIX.
| Expression | Place | Europe |
|---|---|---|
| 1 | ones | |
| 10 | tens | |
| 100 | hundreds | |
| 1,000 | thousands | |
| 10,000 | ten thousands | |
| 1,000,000 | hundreds thousands | |
| 1,000,000 | millions | |
| 10,000,000 | ten millions | |
| 100,000,000 | hundred millions | |
| 1,000,000,000 | billions | milliards |
| 1,000,000,000,000 | trillions | billions |