Question

Write a function is_palindrome that takes a string and returns true if it's a palindrome and false otherwise. Use a stack (simulated with a list) to help determine whether a string is a palindrome. The function should ignore case sensitivity, spaces, and punctuation.

Answer 1

To determine whether a string is a palindrome, we can use a stack data structure to compare the characters of the string. The function is_palindrome checks if a string is a palindrome by ignoring case sensitivity, spaces, and punctuation.

Step-by-step explanation:

To determine whether a string is a palindrome, we can use a stack data structure to compare the characters of the string. First, we remove any spaces, punctuation, and convert the string to lowercase. Then, we iterate through the string and push each character onto the stack. After that, we pop each character from the stack and compare it with the corresponding character in the string. If all characters match, the string is a palindrome. If any character doesn't match, the string is not a palindrome. Here's the code implementation:

def is_palindrome(string):
stack = []
string = string.lower()
string = ''.join(e for e in string if e.isalnum())
for char in string:
stack.append(char)
for char in string:
if char != stack.pop():
return False
return True