You will design and implement a program that prompts the user for an input with How can I help you? .

INSTRUCTIONS TO CANDIDATES

ANSWER ALL QUESTIONS

Assignment  1

1. Description

You will design and implement a program that prompts the user for an input with How can I help you? .

User input should be one of three possible kinds:

• Please convert ***

• Please convert *** using ***

• Please convert *** minimally

If user input is not of this form, with any occurrence of *** an arbitrary nonempty sequence of nonspace symbols, then the program should print out

I don't get what you want, sorry mate!

and stop.

 

• First kind of input. In case the user inputs Please convert ***, then *** should be either a strictly positive integer (whose representation should not start with 0) that can be converted to a Roman number (hence be at most equal to 3999), or a valid Roman number; otherwise, the program should print out

Hey, ask me something that's not impossible to do!

and stop. If the input is as expected, then the program should perform the conversion, from Arabic to Roman or from Roman to Arabic, and print out the result in the form

Sure! It is **

• Second kind of input. In case the user inputs Please convert *** using ***, then the first *** should be a strictly positive integer (whose representation should not start with 0) or a sequence of (lowercase or uppercase) letters and the second *** should be a sequence of distinct (lowercase or uppercase) letters. Moreover,

the second *** is intended to represent a sequence of so-called generalised Roman symbols, the classical Roman symbols corresponding to the sequence MDCLXVI, whose rightmost element is meant to represent 1, the second rightmost element, 5, the third rightmost element, 10, etc.;

if it is not an integer,  the first ***  is intended to represent a so-called generalised  Roman  number,   that is, a sequence of generalised Roman symbols that can be decoded using the provided sequence of generalised Roman symbols similarly to the way Roman numbers are represented.

If that is not the case, of if it is not possible to convert the first *** from Arabic to generalised Roman or from generalised Roman to Arabic, then the program should print out

Hey, ask me something that's not impossible to do!

and stop. If the input is as expected and the conversion can be performed, then the program should indeed perform the conversion, from Arabic to generalised Roman or from generalised Roman to Arabic, and print out the result in the form

Sure! It is ***

 

• Third kind of input. In case the user inputs Please convert *** minimally, then *** should be a sequence of (lowercase or uppercase) The program will try and view *** as a generalised Roman number with respect to some sequence of generalised Roman symbols. If that is not possible, then the program should print out

Hey, ask me something that's not impossible to do!

and stop. Otherwise, the program should find the smallest integer that could be converted from ***, viewed as some generalised Roman number, to Arabic, and output a message of the form

Sure! It is *** using ***

 

• Sample Here are a few tests together with the expected outputs. The outputs of your program should be exactly as shown.

$ python3 roman_arabic.py

How can I help you? Please do my assignment... I don't get what you want, sorry mate!

$ python3 roman_arabic.py

How can I help you? please convert 35 I don't get what you want, sorry mate!

$ python3 roman_arabic.py

How can I help you? Please convert 035

Hey, ask me something that's not impossible to do!

$ python3 roman_arabic.py

How can I help you? Please convert 4000

Hey, ask me something that's not impossible to do!

$ python3 roman_arabic.py

How can I help you? Please convert IIII

Hey, ask me something that's not impossible to do!

$ python3 roman_arabic.py

How can I help you? Please convert IXI

Hey, ask me something that's not impossible to do!

 

3 How can I help you? Please convert 35 Sure! It is XXXV

$ python3 roman_arabic.py

How can I help you? Please convert 1982 Sure! It is MCMLXXXII

$ python3 roman_arabic.py

How can I help you? Please convert 3007 Sure! It is MMMVII

$ python3 roman_arabic.py

How can I help you? Please convert MCMLXXXII Sure! It is 1982

$ python3 roman_arabic.py

How can I help you? Please convert MMMVII Sure! It is 3007

$ python3 roman_arabic.py

How can I help you? Please convert 123 by using ABC I don't get what you want, sorry mate!

$ python3 roman_arabic.py

How can I help you? Please convert 123 ussing ABC I don't get what you want, sorry mate!

$ python3 roman_arabic.py

How can I help you? Please convert XXXVI using VI Hey, ask me something that's not impossible to do!

$ python3 roman_arabic.py

How can I help you? Please convert XXXVI using IVX Hey, ask me something that's not impossible to do!

$ python3 roman_arabic.py

How can I help you? Please convert XXXVI using XWVI Hey, ask me something that's not impossible to do!

$ python3 roman_arabic.py

How can I help you? Please convert I using II Hey, ask me something that's not impossible to do!

$ python3 roman_arabic.py

How can I help you? Please convert _ using _

Hey, ask me something that's not impossible to do!

$ python3 roman_arabic.py

How can I help you? Please convert XXXVI using XVI Sure! It is 36

$ python3 roman_arabic.py

How can I help you? Please convert XXXVI using XABVI Sure! It is 306

$ python3 roman_arabic.py

How can I help you? Please convert EeDEBBBaA using fFeEdDcCbBaA Sure! It is 49036

$ python3 roman_arabic.py

How can I help you? Please convert 49036 using fFeEdDcCbBaA Sure! It is EeDEBBBaA

$ python3 roman_arabic.py

How can I help you? Please convert 899999999999 using AaBbCcDdEeFfGgHhIiJjKkLl Sure! It is Aaaabacbdcedfegfhgihjikjlk

$ python3 roman_arabic.py

How can I help you? Please convert ABCDEFGHIJKLMNOPQRST using AbBcCdDeEfFgGhHiIjJkKlLmMnNoOpPqQrRsStT

Sure! It is 11111111111111111111

 

 

How can I help you? Please convert 1900604 using LAQMPVXYZIRSGN Sure! It is AMAZING

$ python3 roman_arabic.py

How can I help you? Please convert ABCD minimally using ABCDE I don't get what you want, sorry mate!

$ python3 roman_arabic.py

How can I help you? Please convert ABCD minimaly I don't get what you want, sorry mate!

$ python3 roman_arabic.py

How can I help you? Please convert 0I minimally Hey, ask me something that's not impossible to do!

$ python3 roman_arabic.py

How can I help you? Please convert ABAA minimally Hey, ask me something that's not impossible to do!

$ python3 roman_arabic.py

How can I help you? Please convert ABCDEFA minimally Hey, ask me something that's not impossible to do!

$ python3 roman_arabic.py

How can I help you? Please convert MDCCLXXXVII minimally Sure! It is 1787 using MDCLXVI

$ python3 roman_arabic.py

How can I help you? Please convert MDCCLXXXIX minimally Sure! It is 1789 using MDCLX_I

$ python3 roman_arabic.py

How can I help you? Please convert MMMVII minimally Sure! It is 37 using MVI

$ python3 roman_arabic.py

How can I help you? Please convert VI minimally Sure! It is 4 using IV

$ python3 roman_arabic.py

How can I help you? Please convert ABCADDEFGF minimally Sure! It is 49269 using BA_C_DEF_G

$ python3 roman_arabic.py

How can I help you? Please convert ABCCDED minimally Sure! It is 1719 using ABC_D_E

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