Using recursion to determine whether a word is a palindrome
Understand how to use recursion to identify palindromes by comparing the first and last letters of a string and recursively checking the substring. Learn to recognize base cases and apply recursive logic to implement palindrome detection.
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A palindrome is a word that is spelled the same forward and backward. For example, rotor and redder are palindromes, but motor is not.
How can you use recursion to determine whether a word is a palindrome? Let's start by understanding what's a base case. Consider the word "a". It's a palindrome. In fact, we don't have to think of palindromes as actual words in the English language (or whatever language you'd like to consider). We can think of a palindrome as just any sequence of letters that reads the same forward and backward, such as "xyzyzyx". We ...