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
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
|
#!/usr/bin/perl -s
use v5.16;
use Test2::V0;
use List::Util 'reduce';
use Data::Dump;
use experimental qw(signatures postderef);
our ($tests, $examples);
run_tests() if $tests || $examples; # does not return
die <<EOS unless @ARGV;
usage: $0 [-examples] [-tests] [num ...]
-examples
run the examples from the challenge
-tests
run some tests
num ...
numbers
EOS
### Input and Output
dd @{consecutive_arrays(@ARGV)};
### Implementation
sub consecutive_arrays($f, @a) {
reduce {
if ($b == $a->[-1][-1] + 1) {
push $a->[-1]->@*, $b;
} else {
push @$a, [$b];
}
$a;
} [[$f]], @a;
}
### Examples and tests
sub run_tests {
SKIP: {
skip "examples" unless $examples;
is consecutive_arrays(1, 2, 3, 6, 7, 8, 9),
[[1, 2, 3], [6, 7, 8, 9]], 'example 1';
is consecutive_arrays(11, 12, 14, 17, 18, 19),
[[11, 12], [14], [17, 18, 19]], 'example 2';
is consecutive_arrays(2, 4, 6, 8),
[[2], [4], [6], [8]], 'example 3';
is consecutive_arrays(1, 2, 3, 4, 5),
[[1, 2, 3, 4, 5]], 'example 4';
}
SKIP: {
skip "tests" unless $tests;
is consecutive_arrays(1),
[[1]], 'single value';
}
done_testing;
exit;
}
|
