Can an empty string be considered a palindrome

context-free-grammar, palindrome

Solution

Actually, an empty string would be considered a palindrome since no matter how you look at it it will always be the same empty string backwards and forwards. Therefore, if you are trying to make a method called isPalindrome then your base case would be:

public static boolean isPalindrome(String text)
{
    if(text.length()==1||text.length==0){
        return true;}
}

//of course you would only need a base case if you were trying to implement the method using recursion.

Problem

I have been asked to give a context-free grammar that generates the following language (The alphabet is {0, 1}: { w| w is a palindrome } To answer this correctly, I need to know if I can consider an empty string to be a palindrome. Thank you.

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