<?php function exam01($alice, $bob){ for($i=0;$i<count($alice);$i++){ $a= 0; $b= 0; for($j=$i;$j<count($bob);$j++){ if($alice[$i]<$bob[$j]){ $b++; }if($alice[$i]>$bob[$j]){ $a++; } } } return array($a,$b); } function test_01(){ if(exam01([1,2,3], [7,1,3]) == [1,1]){ echo "pass"; } else { echo "fail"; } } test_01();