<prompt> Generate an algorithm to check if a given string is a palindrome.  <response>: A palindrome is a word, phrase, or sequence of characters that reads the same backward as forward. For example, racecar is a palindrome because it reads the same backward and forward. Here is an algorithm to check if a given string is a palindrome or not:function is_palindromestring start_index 0 end_index length of string - 1 while start_index end_index: if stringstart_index is not equal to stringend_index: Characters are not matching, so it is not a palindrome return False end Move start_index towards right and end_index towards left start_index start_index 1 end_index end_index - 1 end If we reach here, means all characters were matching return TrueendThis algorithm works by comparing the first and last characters, then the second and second last characters, and so on. If all the comparisons return true, then the string is a palindrome. If any of the comparison returns false, then the string is not a palindrome. 