Write a Python function to check if a string is a palindrome.

 def is_palindrome(input_string):

    input_string = input_string.lower().replace(" ", "")

    reversed_string = input_string[::-1]

    return input_string == reversed_string

# Test the function

my_string = "A man a plan a canal Panama"

is_palindrome = is_palindrome(my_string)

print(is_palindrome)