Kata: TDD Arabic to Roman Numbers with C#
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
| 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 |
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