1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
|
#!/usr/bin/perl
# https://theweeklychallenge.org/blog/perl-weekly-challenge-279/
# Task #2 > Split String
#
# You are given a string, $str.
#
# Write a script to split the given string into two containing exactly same number of vowels and return true if you can otherwise false.
#
use strict;
use warnings;
use Test2::V0 '-no_srand';
my @tests = (
[ 'perl', 'false' ],
[ 'book', 'true' ],
[ 'good morning', 'true' ],
);
for my $test (@tests) {
my ($str, $expected) = @$test;
my $splits = splits_with_equal_vowels($str);
is any_valid_split($splits) ? 'true' : 'false', $expected;
}
done_testing;
sub any_valid_split {
my $splits = shift;
return !! scalar @$splits;
}
sub splits_with_equal_vowels {
my $str = shift;
# count the number of vowels
my $vowels = $str =~ tr/aeiouAEIOU//;
return [] if $vowels % 2; # odd number of vowels
my $res = [];
my $count_vw = 0;
for my $i (0 .. length($str)/2 - 1) {
++$count_vw if substr($str, $i, 1) =~ /[aeiou]/i;
next unless $count_vw == $vowels / 2; # not a valid split point
push @$res, [ substr($str, 0, $i+1), substr($str, $i + 1)];
}
return $res;
}
|
