Posted on by Kalkicode
Code Conversion

# Decimal to roman numeral converter in scala

Scala program for Decimal to roman numeral converter. Here mentioned other language solution.

``````//  Scala program for
//  Conversion from Decimal to roman number
class Perform ()
{
// Display roman value of n
def show(n : Int) : Unit=
{
if (n==1)
{
print("I")
}
else if(n==4)
{
print("IV")
}
else if(n==5)
{
print("V")
}
else if(n==9)
{
print("IX")
}
else if(n==10)
{
print("X")
}
else if(n==40)
{
print("XL")
}
else if(n==50)
{
print("L")
}
else if(n==90)
{
print("XC")
}
else if(n==100)
{
print("C")
}
else if(n==400)
{
print("CD")
}
else if(n==500)
{
print("D")
}
else if(n==900)
{
print("DM")
}
else if(n==1000)
{
print("M")
}
}
def select(number : Long,
collection : Array[Int], size : Int) : Long=
{
var n = 1
var i = 0
while (i < size)
{
if (number >= collection(i))
{
n = collection(i)
}
else
{
i = size;
}
i += 1
}
show(n)
// Reduce the value of number
return number - n
}
def roman(num : Long) : Unit=
{
var number = num;
if (number <= 0)
{
// When is not a natural number
return
}
// Base case collection
var collection =
Array(1, 4, 5, 9, 10, 40, 50, 90, 100, 400, 500, 900, 1000)
// Get the size of collection
var size = collection.length
print(" " + number + " : ")
while (number > 0)
{
number = select(number, collection, size)
}
println()
}
}

object Main
{
def main(args : Array[String]) : Unit=
{
var task = new Perform()
// Test Case
}
}``````

Output

`````` 10 : X
18 : XVIII
189 : CLXXXIX
604 : DCIV
982 : DMLXXXII
3000 : MMM``````

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