my %hash;
for my $file (glob 'file*.txt') {
    local $/; # Slurp
    open my $fh, '<', $file;
    $hash{$file} = [ split /\s/m, <$fh> ];
}
$" = '> <';
say "\$hash[$_] = <@{$hash{$_}}>" for keys %hash;