Standardize Mobile Number Using Decorators in Python | HackerRank Solution

Hello coders, today we are going to solve Standardize Mobile Number Using Decorators HackerRank Solution in Python.

Standardize Mobile Number Using Decorators

Task

Let’s dive into decorators! You are given N mobile numbers. Sort them in ascending order then print them in the standard format shown below:

+91 xxxxx xxxxx

The given mobile numbers may have +9191 or 0 written before the actual 10 digit number. Alternatively, there may not be any prefix at all.

Input Format

The first line of input contains an integer N, the number of mobile phone numbers.
N lines follow each containing a mobile number.

Output Format

Print N mobile numbers on separate lines in the required format.

Sample Input

3
07895462130
919875641230
9195969878

Sample Output

+91 78954 62130
+91 91959 69878
+91 98756 41230

Concept

Like most other programming languages, Python has the concept of closures. Extending these closures gives us decorators, which are an invaluable asset.
To solve the above question, make a list of the mobile numbers and pass it to a function that sorts the array in ascending order. Make a decorator that standardizes the mobile numbers and apply it to the function.

Solution – Standardize Mobile Number Using Decorators in Python

def wrapper(f):
    def fun(l):
        # complete the function
        f(['+91 ' + c[-10:-5] + ' ' + c[-5:] for c in l])
    return fun

@wrapper
def sort_phone(l):
    print(*sorted(l), sep='\n')

if __name__ == '__main__':
    l = [input() for _ in range(int(input()))]
    sort_phone(l) 

Disclaimer: The above Problem (Standardize Mobile Number Using Decorators) is generated by Hacker Rank but the Solution is Provided by CodingBroz. This tutorial is only for Educational and Learning Purpose.

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