XOR of Array
PHP
Medium
5 views
Problem Description
Given n integers, print XOR of all values.
Input Format
First n. Next line n ints.
Output Format
One integer.
Official Solution
<?php
$inputText=trim(stream_get_contents(STDIN));
if($inputText==='') exit;
$tokens=preg_split('/\\s+/', $inputText);
$i=0; $n=intval($tokens[$i++] ?? 0);
$x=0;
for($k=0;$k<$n;$k++) $x ^= intval($tokens[$i++] ?? 0);
echo $x;
?>
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