Answer to Question #308941 in Python for Michael

Question

Given a string of numbers S, the task is to find the maximum value from the string S, you can add a ‘+’ or ‘*’ sign between any two numbers.

For example, S=891. As 8*9*1 = 72 and 8*9+1 = 73. So, 73 is maximum.

Write a python module MaxValue.py for solve the above task. You need to import this module in RollNo_W12B_1.py. In RollNo_W12B_1.py, define a function Find_Max(n) which takes a string and return maximum value or error message as shown in example by calling the appropriate function implemented in MaxValue.py module. Also handle the possible exceptions and display the exception message in form of string.

 

Example-1

Example-2

Example-3

Example-4

Input:

01231

 

Output:

10

Input:

891

 

Output:

73

Input:

0000

 

Output:

Input:

45f

 

Output:

Invalid Number

Answer 1

# MaxValue.py

def max_val(D):
    if len(D) == 1:
        return int(D[0])    

    d = int(D[-1])
    D1 = D[:-1]
    m = max_val(D1)
    m1 = d + m
    m2 = d * m

    return m1 if m1 > m2 else m2

# RollNo_W12B_1.py

from MaxValue import max_val

def Find_Max(S):
    L = [d for d in S]
    try:
        res = max_val(L)
    except:
        res = "Invalid Number"
    return res

def main():
    S = input()
    res = Find_Max(S)
    print(res)

if __name__ == '__main__':
    main()