CODE EXAMPLE FOR JAVA

integer to roman

# Python 3 program to convert Decimal
# number to Roman numbers.
import math
 
def integerToRoman(A):
    romansDict = 
        {
            1: "I",
            5: "V",
            10: "X",
            50: "L",
            100: "C",
            500: "D",
            1000: "M",
            5000: "G",
            10000: "H"
        }
 
    div = 1
    while A >= div:
        div *= 10
 
    div //= 10
 
    res = ""
 
    while A:
 
        # main significant digit extracted
        # into lastNum
        lastNum = (A // div)
 
        if lastNum <= 3:
            res += (romansDict[div] * lastNum)
        elif lastNum == 4:
            res += (romansDict[div] +
                          romansDict[div * 5])
        elif 5 <= lastNum <= 8:
            res += (romansDict[div * 5] +
            (romansDict[div] * (lastNum - 5)))
        elif lastNum == 9:
            res += (romansDict[div] +
                         romansDict[div * 10])
 
        A = math.floor(A % div)
        div //= 10
         
    return res
 
# Driver code
print("Roman Numeral of Integer is:"
                   + str(integerToRoman(3549)))