A [[wp:Palindrome|palindrome]] is a phrase which reads the same backward and forward.

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Write a function or program that checks whether a given sequence of characters (or, if you prefer, bytes)
is a palindrome.

'''''For extra credit:'''''
* Support Unicode characters.
* Write a second function (possibly as a wrapper to the first) which detects ''inexact'' palindromes, i.e. phrases that are palindromes if white-space and punctuation is ignored and case-insensitive comparison is used.

{{task heading|Hints}}
* It might be useful for this task to know how to [[Reversing a string|reverse a string]].
* This task's entries might also form the subjects of the task [[Test a function]].

{{task heading|Related tasks}}

{{Related tasks/Word plays}}

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