Check if a string is a palindrome

Question

I have a string as input and have to break the string in two substrings. If the left substring equals the right substring then do some logic.

How can I do this?

Answer 1

That is non-trivial, there is no built in method to do that for you, you'll have to write your own. You will need to consider what rules you would like to check, like you implicitly stated you accepted reversing of one string. Also, you missed out the middle character, is this only if odd length?

So you will have something like:

if(myString.length % 2 = 0)
{
     //even
     string a = myString.substring(0, myString.length / 2);
     string b = myString.substring(myString.length / 2 + 1, myString.lenght/2);

     if(a == b)
           return true;

     //Rule 1: reverse
     if(a == b.reverse()) //can't remember if this is a method, if not you'll have to write that too
           return true;

etc, also doing whatever you want for odd strings