Swap with XOR
Medium
PHP
PHP Operators
32 views
Problem Statement
Swap two integers using XOR and print them.
Input Format
One line: a b.
Output Format
One line: swapped_a swapped_b.
Example
4 7
7 4
Constraints
0
Input / Output Format
Input Format
One line: a b.
Output Format
One line: swapped_a swapped_b.
Constraints
0
Examples
Input:
4 7
Output:
7 4
Example Solution (Public)
<?php
$inputText=trim(stream_get_contents(STDIN));
if($inputText==='') exit;
[$a,$b]=array_map('intval',preg_split('/\\s+/', $inputText));
$a=$a^$b; $b=$a^$b; $a=$a^$b;
echo $a.' '.$b;
?>
Official Solution Code
<?php
$inputText=trim(stream_get_contents(STDIN));
if($inputText==='') exit;
[$a,$b]=array_map('intval',preg_split('/\\s+/', $inputText));
$a=$a^$b; $b=$a^$b; $a=$a^$b;
echo $a.' '.$b;
?>
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