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#!/usr/bin/env perl
use strict;
use warnings;
use experimental qw{ fc say postderef signatures state };
my @examples = (
'perl',
'book',
'good morning',
);
for my $input (@examples) {
my $output = split_string($input) ? 'true' : 'false';
say <<"END";
Input: \$str = "$input"
Output: $output
END
}
sub split_string ($word) {
my $l = length $word;
for my $i ( 1 .. $l ) {
my $first = substr $word, 0, $i;
my $second = substr $word, $i, $l - $i;
my $ff = scalar grep { is_vowel($_) } split //, $first;
my $ss = scalar grep { is_vowel($_) } split //, $second;
return 1 if $ff == $ss;
}
return 0;
}
sub is_vowel ($letter) {
my @vowels = qw{a e i o u};
return 1 if grep { $_ eq $letter } @vowels;
return 0;
}
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