Palindrome Checker

Source: Dev.to

What is a palindrome?

A palindrome is a word, phrase, number, or other sequence of characters that reads the same forward and backward (ignoring spaces, punctuation, and capitalization).

Examples

Python solution

def is_palindrome(s):
    """
    Checks if a string is a palindrome.
    Ignores case and spaces.
    """
    s = s.lower()
    s = s.replace(" ", "")
    return s == s[::-1]

# Test cases
print(is_palindrome("wilabaliw"))               # True
print(is_palindrome("A man a plan a canal Panama"))  # True

How it works

1. Convert to lowercase

   s = s.lower()

   This ensures that "Racecar" and "racecar" are treated as the same string.

2. Remove spaces

   s = s.replace(" ", "")

   Spaces are irrelevant for palindrome checking in phrases like "A man a plan...".

3. Compare with reversed string

   return s == s[::-1]

   s[::-1] creates a reversed copy of the string. If the cleaned original string equals its reverse, the function returns True; otherwise, False.

Happy coding!