php, 51 bytes

Result

WA

Code [DL]

<?php $a=str_split(readline());sort($a);echo "".$a;

stdin

0334090118404968027411572822585061175148099225370785637867343970658769292885544896021682434024588836

stdout

Array

stderr

PHP Notice:  Array to string conversion in /volume/CODE on line 1

strace