The challenge
Write a function that checks if a given string (case insensitive) is a palindrome.
The solution in Python
Option 1:
def is_palindrome(s):
s = s.lower()
for i, item in enumerate(s):
if i<len(s)/2:
if s[i]!=s[len(s)-i-1]:
return False
return True
Option 2:
def is_palindrome(s):
s = s.lower()
return s == s[::-1]
Option 3:
def is_palindrome(s):
return s.lower()==s[::-1].lower()
Test cases to validate our solution
@test.describe('sample tests')
def sample_tests():
test.assert_equals(is_palindrome('a'), True)
test.assert_equals(is_palindrome('aba'), True)
test.assert_equals(is_palindrome('Abba'), True)
test.assert_equals(is_palindrome('malam'), True)
test.assert_equals(is_palindrome('walter'), False)
test.assert_equals(is_palindrome('kodok'), True)
test.assert_equals(is_palindrome('Kasue'), False)
