$lookfor=<STDIN>;
chop($lookfor);

foreach $inv (@inventory) {
($YEAR,$MAKE,$MODEL,$PRICE)=split(/ /, $inv);
push (@year,$YEAR);
push (@make, $MAKE);
push (@price, $PRICE);
}
if ($lookfor =~ /year/i){
    @sorted = sort @year;
    print join "\n",@sorted;
    print "\n";
}

if ($lookfor =~ /make/i){
    @sorted = sort @make;
    print join "\n", @sorted;
    print "\n";
}