intToRoman_shuna.java

package com.freetymekiyan.algorithms.level.medium;

/**
 * Integer to Roman
 * Given an integer, convert it to a roman numeral.
 * Input is guaranteed to be within the range from 1 to 3999.
 * Tags: Math String
 * Similar Problems: (E) Roman to Integer (H) Integer to English Words
 *
 * @author chenshuna
 */
class IntToRoman_shuna {

    public static String intToRoman(int num) {
        String M[] = {"", "M", "MM", "MMM"};
        String C[] = {"", "C", "CC", "CCC", "CD", "D", "DC", "DCC", "DCCC", "CM"};
        String X[] = {"", "X", "XX", "XXX", "XL", "L", "LX", "LXX", "LXXX", "XC"};
        String I[] = {"", "I", "II", "III", "IV", "V", "VI", "VII", "VIII", "IX"};
        return M[num / 1000] + C[(num % 1000) / 100] + X[(num % 100) / 10] + I[num % 10];
    }

    public static void main(String[] args) {
        System.out.print(intToRoman(135));
    }
}