Assignment: #RomanNumeral |
Due: X/XX/MMXVII |
Points: III |

Write a Java application that converts integers that are less than 4000 into Roman Numerals and Roman Numerals into integers.

Prompt the user to enter either an integer or a Roman Numeral. If an integer is entered, then print its Roman Numeral equivalent; else, print the integer equivalent of the Roman Numeral. Loop until the user enters a -1. Print error messages if integers less than 1 or greater than 3999 are entered. Print error messages if invalid Roman Numerals are entered.

Your program must have a method named

rntoi()that converts a roman numeral into an integer. And it must have a method nameditorn()that converts an integer to roman numeral.static int rntoi(String rn); static String itorn(int n);## Roman Numeral Notes

I = 1 V = 5 X = 10 L = 50 C = 100 D = 500 M = 1000Note: The same roman numeral digit cannot be used four times consecutively. Examples.

4 is IV, not IIII 9 is IX, not VIIII 40 is XL, not XXXX 90 is XC, not LXXXX 99 is XCIX, not LXXXXVIIII## Example Output

Each output line has the format: input_value " is " converted_value

CI is 101 <-- input: CI 101 is CI <-- input: 101 MMMCCCXXXVVVIII is 3348 3348 is MMMCCCXXXVVVIII XCIX is 99 99 is XCIX MMXVII is 2017 2017 is MMXVII CCCXIV is 314 314 is CCCXIV MIX is 1009 1009 is MIX LIX is 59 59 is LIX XLII is 42 42 is XLII VIII is 8 8 is VIII MMCXVI is 2116 2116 is MMCXVI XLIX is 49 49 is XLIX L is 50 50 is L M is 1000 1000 is M MMMCMXCIX is 3999 3999 is MMMCMXCIX I is 1 1 is I MCMLVII is 1957 1957 is MCMLVII CCV is 205 205 is CCV MMMMCXVI is invalid input 4000 is invalid input CSC205 is invalid input 0x205 is invalid input -1