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It's complicated.

Chris Sprague bad-mushroom

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It's complicated.
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<?php
function isPalindrome(string $word): bool
{
$hashMap = [];
for ($i = 0; $i < strlen($word); $i++) {
if (isset($hashMap[$word{$i}])) {
$hashMap[$word{$i}] = $hashMap[$word{$i}] + 1;
} else {