Reverse List Function

Introduction

In Python, lists and strings can be reversed using built-in functions. However, it is also possible to reverse a list or a string using slice notation.

In this challenge, you will write a function that reverses a list or a string using slice notation.

Skills Graph

Reverse List Function

Write a Python function called reverse(itr) that takes a list or a string as its argument and returns a new list or string that contains the elements or characters in reverse order.

Your function should have the following requirements:

• The function should be named reverse
• The function should take a single argument, which is a list or a string
• The function should return a new list or string that contains the elements or characters in reverse order
• The function should not modify the original list or string

def reverse(itr):
  return itr[::-1]

reverse([1, 2, 3]) ## [3, 2, 1]
reverse('snippet') ## 'teppins'

Summary

In this challenge, you learned how to reverse a list or a string using slice notation in Python. You wrote a function called reverse that takes a list or a string as its input and returns a new list or string that contains the elements or characters in reverse order. Remember that slice notation can be used to extract a range of elements from a list or a string.