<div>
<p>
Write a function that takes in a non-empty string and that returns a boolean
representing whether the string is a palindrome.
</p>
<p>
A palindrome is defined as a string that's written the same forward and
backward. Note that single-character strings are palindromes.
</p>
<h3>Sample Input</h3>
<pre><span>string</span> = "abcdcba"
</pre>
<h3>Sample Output</h3>
<pre>true <span>// it's written the same forward and backward</span>
</pre>
</div>
TypeScript
function isPalindrome(string: string): boolean {
}
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