php - zoj 1115 Digital Roots

AC

<?php // Run Time(ms) 10 // Run Memory(KB) 212 while(fscanf(STDIN,"%s",$integer) <> NULL){ if($integer == 0){ break; } $arr = str_split($integer); $rst = 0; foreach ($arr as $key => $value){ $rst += $value % 9; } $rst %= 9; $rst = $rst === 0 ? 9 : $rst; print $rst."/n"; }