my %sentence_count;
my @sentences = (

        "Hello, how are you doing today?",
        "Where is the bathroom, pablo?",
        "My feet have the most beautiful odour!",
        "It's five o'clock"
);


foreach (@sentences) {
        $sentence_count{scalar(split " ",$_)}++;
}

foreach (keys %sentence_count) {
        print "$sentence_count{$_} sentences have $_ words\n";
}