500 is written as D

michaelbannister · Jul 10, 2016 · 1023ff9ca243a5cceee4b8832c94de4c392567e1 · 1023ff9
1 parent 77b05ee
commit 1023ff9ca243a5cceee4b8832c94de4c392567e1
Unified Split

Showing with 3 additions and 1 deletion.

+1 −0 src/main/kotlin/RomanNumerals.kt

+2 −1 src/test/kotlin/DecimalToRomanConverterTest.kt
diff --git a/src/main/kotlin/RomanNumerals.kt b/src/main/kotlin/RomanNumerals.kt
@@ -27,6 +27,7 @@ fun toDecimalPlaceValues(number: Int): List<PlaceValue> {
 
 private fun Int.toRomanDigit(): String = when(this) {
     1000 -> "M"
+    500 -> "D"
     100 -> "C"
     50 -> "L"
     10 -> "X"

diff --git a/src/test/kotlin/DecimalToRomanConverterTest.kt b/src/test/kotlin/DecimalToRomanConverterTest.kt
@@ -28,7 +28,8 @@ class DecimalToRomanConverterTest {
                 arrayOf(11, "XI"),
                 arrayOf(3012, "MMMXII"), // I didn't expect this to fail, just checking
                 arrayOf(5, "V"),
-                arrayOf(50, "L")
+                arrayOf(50, "L"),
+                arrayOf(500, "D")
             )
 
     @Test