feat(challenges): add roman-numerals

challenges/roman-numerals/README.md

@@ -0,0 +1,45 @@
+# roman-numerals
+
+Created by [@Divlo](https://github.com/Divlo) on 30 June 2021.
+
+## Instructions
+
+The objective of this challenge is to create a function that translates a number into Roman numerals or the other way around.
+
+We will use the letters `I`, `V`, `X`, `L`, `C`, `D`, `M` to build the Roman numerals.
+
+Here are the rules for building a Roman numeral:
+
+- The numbers `1`, `2` and `3` are written respectively as `I`, `II` and `III`
+- The number `5` is written as `V`
+- The number `10` is written as `X`
+- The number `50` is written as `L`
+- The number `100` is written as `C`
+- The number `500` is written as `D`
+- The number `1000` is written as `M`
+- When writing two letters in a row, if the numerical value of the first is greater than the numerical value of the second, their numerical values ​​are added. For example the number `6` is written `VI`. We add `V` (5) + `I` (1) = 6.
+- When writing two letters in a row, if the numerical value of the first is less than the numerical value of the second, the value of the first is subtracted from the second. For example the number `4` is written `IV`. We subtract `V` (5) - `I` (1) = 4.
+- Subtractions of values ​​are limited to 2 letters only. For example we **cannot** write `8` while doing `IIX`. We must use the addition of letters like this `VIII`.
+- Therefore, the first ten numbers are written as `I`, `II`, `III`, `IV`, `V`, `VI`, `VII`, `VIII`, `IX`, `X` . Larger numbers follow the same pattern.
+- You can associate as many symbols as you want to write larger numbers, for example:
+  - `36` is written as `XXXVI`
+  - `42` is written as `XLII`
+  - `2448` is written as `MMCDXLVIII`.
+
+| Symbol | I | V | X  | L  | C   | D   | M    |
+|--------|---|---|----|----|-----|-----|------|
+| Value  | 1 | 5 | 10 | 50 | 100 | 500 | 1000 |
+
+### Input
+
+- **Line 1:** The string : `arabic to roman` or `roman to arabic` to determine how to convert the number
+- **Line 2:** The number to convert
+
+## Source
+
+- [Wikipedia - Roman numerals](https://en.wikipedia.org/wiki/Roman_numerals)
+- [Wikipedia - Arabic numerals](https://en.wikipedia.org/wiki/Arabic_numerals)
+
+## Examples
+
+See the `test` folder for examples of input/output.

challenges/roman-numerals/test/1/input.txt

@@ -0,0 +1,2 @@
+arabic to roman
+1

challenges/roman-numerals/test/1/output.txt

@@ -0,0 +1 @@
+I

challenges/roman-numerals/test/10/input.txt

@@ -0,0 +1,2 @@
+arabic to roman
+59

challenges/roman-numerals/test/10/output.txt

@@ -0,0 +1 @@
+LIX

challenges/roman-numerals/test/11/input.txt

@@ -0,0 +1,2 @@
+arabic to roman
+93

challenges/roman-numerals/test/11/output.txt

@@ -0,0 +1 @@
+XCIII

challenges/roman-numerals/test/12/input.txt

@@ -0,0 +1,2 @@
+arabic to roman
+99

challenges/roman-numerals/test/12/output.txt

@@ -0,0 +1 @@
+XCIX

challenges/roman-numerals/test/13/input.txt

@@ -0,0 +1,2 @@
+arabic to roman
+141

challenges/roman-numerals/test/13/output.txt

@@ -0,0 +1 @@
+CXLI

challenges/roman-numerals/test/14/input.txt

@@ -0,0 +1,2 @@
+arabic to roman
+163

challenges/roman-numerals/test/14/output.txt

@@ -0,0 +1 @@
+CLXIII

challenges/roman-numerals/test/15/input.txt

@@ -0,0 +1,2 @@
+arabic to roman
+369

challenges/roman-numerals/test/15/output.txt

@@ -0,0 +1 @@
+CCCLXIX

challenges/roman-numerals/test/16/input.txt

@@ -0,0 +1,2 @@
+arabic to roman
+402

challenges/roman-numerals/test/16/output.txt

@@ -0,0 +1 @@
+CDII

challenges/roman-numerals/test/17/input.txt

@@ -0,0 +1,2 @@
+arabic to roman
+575

challenges/roman-numerals/test/17/output.txt

@@ -0,0 +1 @@
+DLXXV

challenges/roman-numerals/test/18/input.txt

@@ -0,0 +1,2 @@
+arabic to roman
+911

challenges/roman-numerals/test/18/output.txt

@@ -0,0 +1 @@
+CMXI

challenges/roman-numerals/test/19/input.txt

@@ -0,0 +1,2 @@
+arabic to roman
+999

challenges/roman-numerals/test/19/output.txt

@@ -0,0 +1 @@
+CMXCIX

challenges/roman-numerals/test/2/input.txt

@@ -0,0 +1,2 @@
+arabic to roman
+2

challenges/roman-numerals/test/2/output.txt

@@ -0,0 +1 @@
+II

challenges/roman-numerals/test/20/input.txt

@@ -0,0 +1,2 @@
+arabic to roman
+1024

challenges/roman-numerals/test/20/output.txt

@@ -0,0 +1 @@
+MXXIV

challenges/roman-numerals/test/21/input.txt

@@ -0,0 +1,2 @@
+arabic to roman
+2751

challenges/roman-numerals/test/21/output.txt

@@ -0,0 +1 @@
+MMDCCLI

challenges/roman-numerals/test/22/input.txt

@@ -0,0 +1,2 @@
+arabic to roman
+3000

challenges/roman-numerals/test/22/output.txt

@@ -0,0 +1 @@
+MMM

challenges/roman-numerals/test/23/input.txt

@@ -0,0 +1,2 @@
+roman to arabic
+I

challenges/roman-numerals/test/23/output.txt

@@ -0,0 +1 @@
+1

challenges/roman-numerals/test/24/input.txt

@@ -0,0 +1,2 @@
+roman to arabic
+II

challenges/roman-numerals/test/24/output.txt

@@ -0,0 +1 @@
+2

challenges/roman-numerals/test/25/input.txt

@@ -0,0 +1,2 @@
+roman to arabic
+III

challenges/roman-numerals/test/25/output.txt

@@ -0,0 +1 @@
+3

challenges/roman-numerals/test/26/input.txt

@@ -0,0 +1,2 @@
+roman to arabic
+IV

challenges/roman-numerals/test/26/output.txt

@@ -0,0 +1 @@
+4

challenges/roman-numerals/test/27/input.txt

@@ -0,0 +1,2 @@
+roman to arabic
+V

challenges/roman-numerals/test/27/output.txt

@@ -0,0 +1 @@
+5

challenges/roman-numerals/test/28/input.txt

@@ -0,0 +1,2 @@
+roman to arabic
+VI

challenges/roman-numerals/test/28/output.txt

@@ -0,0 +1 @@
+6

challenges/roman-numerals/test/29/input.txt

@@ -0,0 +1,2 @@
+roman to arabic
+IX

challenges/roman-numerals/test/29/output.txt

@@ -0,0 +1 @@
+9

challenges/roman-numerals/test/3/input.txt

@@ -0,0 +1,2 @@
+arabic to roman
+3

challenges/roman-numerals/test/3/output.txt

@@ -0,0 +1 @@
+III

challenges/roman-numerals/test/30/input.txt

@@ -0,0 +1,2 @@
+roman to arabic
+XXVII

challenges/roman-numerals/test/30/output.txt

@@ -0,0 +1 @@
+27

challenges/roman-numerals/test/31/input.txt

@@ -0,0 +1,2 @@
+roman to arabic
+XLVIII

challenges/roman-numerals/test/31/output.txt

@@ -0,0 +1 @@
+48

challenges/roman-numerals/test/32/input.txt

@@ -0,0 +1,2 @@
+roman to arabic
+LIX

challenges/roman-numerals/test/32/output.txt

@@ -0,0 +1 @@
+59

challenges/roman-numerals/test/33/input.txt

@@ -0,0 +1,2 @@
+roman to arabic
+XCIII

challenges/roman-numerals/test/33/output.txt

@@ -0,0 +1 @@
+93

challenges/roman-numerals/test/34/input.txt

@@ -0,0 +1,2 @@
+roman to arabic
+XCIX

challenges/roman-numerals/test/34/output.txt

@@ -0,0 +1 @@
+99

challenges/roman-numerals/test/35/input.txt

@@ -0,0 +1,2 @@
+roman to arabic
+CXLI

challenges/roman-numerals/test/35/output.txt

@@ -0,0 +1 @@
+141

challenges/roman-numerals/test/36/input.txt

@@ -0,0 +1,2 @@
+roman to arabic
+CLXIII

challenges/roman-numerals/test/36/output.txt

@@ -0,0 +1 @@
+163

challenges/roman-numerals/test/37/input.txt

@@ -0,0 +1,2 @@
+roman to arabic
+CCCLXIX

challenges/roman-numerals/test/37/output.txt

@@ -0,0 +1 @@
+369

challenges/roman-numerals/test/38/input.txt

@@ -0,0 +1,2 @@
+roman to arabic
+CDII

challenges/roman-numerals/test/38/output.txt

@@ -0,0 +1 @@
+402

challenges/roman-numerals/test/39/input.txt

@@ -0,0 +1,2 @@
+roman to arabic
+DLXXV

challenges/roman-numerals/test/39/output.txt

@@ -0,0 +1 @@
+575

challenges/roman-numerals/test/4/input.txt

@@ -0,0 +1,2 @@
+arabic to roman
+4

challenges/roman-numerals/test/4/output.txt

@@ -0,0 +1 @@
+IV

challenges/roman-numerals/test/40/input.txt

@@ -0,0 +1,2 @@
+roman to arabic
+CMXI

challenges/roman-numerals/test/40/output.txt

@@ -0,0 +1 @@
+911

challenges/roman-numerals/test/41/input.txt

@@ -0,0 +1,2 @@
+roman to arabic
+CMXCIX

challenges/roman-numerals/test/41/output.txt

@@ -0,0 +1 @@
+999

challenges/roman-numerals/test/42/input.txt

@@ -0,0 +1,2 @@
+roman to arabic
+MXXIV

challenges/roman-numerals/test/42/output.txt

@@ -0,0 +1 @@
+1024

challenges/roman-numerals/test/43/input.txt

@@ -0,0 +1,2 @@
+roman to arabic
+MMDCCLI

challenges/roman-numerals/test/43/output.txt

@@ -0,0 +1 @@
+2751

challenges/roman-numerals/test/44/input.txt

@@ -0,0 +1,2 @@
+roman to arabic
+MMM

challenges/roman-numerals/test/44/output.txt

@@ -0,0 +1 @@
+3000

challenges/roman-numerals/test/5/input.txt

@@ -0,0 +1,2 @@
+arabic to roman
+5

challenges/roman-numerals/test/5/output.txt

@@ -0,0 +1 @@
+V

challenges/roman-numerals/test/6/input.txt

@@ -0,0 +1,2 @@
+arabic to roman
+6

challenges/roman-numerals/test/6/output.txt

@@ -0,0 +1 @@
+VI

challenges/roman-numerals/test/7/input.txt

@@ -0,0 +1,2 @@
+arabic to roman
+9

challenges/roman-numerals/test/7/output.txt

@@ -0,0 +1 @@
+IX

challenges/roman-numerals/test/8/input.txt

@@ -0,0 +1,2 @@
+arabic to roman
+27

challenges/roman-numerals/test/8/output.txt

@@ -0,0 +1 @@
+XXVII

challenges/roman-numerals/test/9/input.txt

@@ -0,0 +1,2 @@
+arabic to roman
+48

challenges/roman-numerals/test/9/output.txt

@@ -0,0 +1 @@
+XLVIII