Algorithm
Problem Name: Python -
In this HackerRank Functions in PYTHON problem solution,
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 +91,91 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. You can learn about decorators in 12 easy steps here.
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.
Code Examples
#1 Code Example with Python Programming
Code -
Python Programming
def wrapper(f):
def fun(l):
# complete the function
f(["+91 " + c[-10:-5] + " " + c[-5:] for c in l])
return fun