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#!/usr/bin/perl -s
use v5.26;
use Test2::V0;
use experimental 'signatures';
our ($tests, $examples);
run_tests() if $tests || $examples; # does not return
die <<EOS unless @ARGV;
usage: $0 [-examples] [-tests] [N]
-examples
run the examples from the challenge
-tests
run some tests
N
positive integer
EOS
### Input and Output
say "(@{[uniq_sum_zero(shift)]})";
### Implementation
sub uniq_sum_zero ($n) {
(-$n / 2 .. -1, (0) x ($n % 2), 1 .. $n / 2);
}
### Examples and tests
sub run_tests {
use List::Util qw(uniq sum);
my sub test_usz {
plan 2;
is scalar(uniq @_), scalar @_, 'uniq';
is sum(@_), 0, 'sum zero';
}
SKIP: {
skip "examples" unless $examples;
subtest 'example 1', \&test_usz, uniq_sum_zero(5);
subtest 'example 2', \&test_usz, uniq_sum_zero(3);
subtest 'example 3', \&test_usz, uniq_sum_zero(1);
}
SKIP: {
skip "tests" unless $tests;
subtest 'test 2', \&test_usz, uniq_sum_zero(2);
subtest 'test 4', \&test_usz, uniq_sum_zero(4);
}
done_testing;
exit;
}
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