Question

Write a java program to find the roman number

Answer 1

ava program that converts a decimal number to Roman number. Decimal Number is accepted using Scanner class at the time of execution.

 

import java.util.Scanner;

public class DecimalToRoman {

private static String toRoman(int num) {

String[] romanCharacters = { "M", "CM", "D", "C", "XC", "L", "X", "IX", "V", "I" };

int[] romanValues = { 1000, 900, 500, 100, 90, 50, 10, 9, 5, 1 };

String result = "";

for (int i = 0; i < romanValues.length; i++) {

int numberInPlace = num / romanValues[i];

if (numberInPlace == 0) continue;

result += numberInPlace == 4 && i > 0? romanCharacters[i] + romanCharacters[i - 1]:

new String(new char[numberInPlace]).replace("\0",romanCharacters[i]);

num = num % romanValues[i];

}

return result;

}

public static void main(String[] args) {

Scanner scanner = new Scanner(System.in);

System.out.print("Enter a number : ");

int decimal = scanner.nextInt();

System.out.println(toRoman(decimal));

}

}