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#!/usr/bin/perl -s
use v5.24;
use Test2::V0 '!float';
use PDL;
our ($tests, $examples);
run_tests() if $tests || $examples; # does not return
die <<EOS unless @ARGV > 1;
usage: $0 [-examples] [-tests] [K I...]
-examples
run the examples from the challenge
-tests
run some tests
K
(positive) integer
I...
list of integers
EOS
### Input and Output
say ced(@ARGV);
### Implementation
sub ced {
my $k = shift;
my $ints = long @_;
my $i = sequence($ints);
my $j = $i->dummy(0);
which(($j > $i) & ($ints->dummy(0) == $ints) & ! ($i * $j % $k))->nelem;
}
### Examples and tests
sub run_tests {
SKIP: {
skip "examples" unless $examples;
is ced(2 ,=> 3,1,2,2,2,1,3), 4, 'example 1';
is ced(1,2,3), 0, 'example 2';
}
SKIP: {
skip "tests" unless $tests;
}
done_testing;
exit;
}
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