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| -rwxr-xr-x | challenge-339/jo-37/perl/ch-2.pl | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/challenge-339/jo-37/perl/ch-2.pl b/challenge-339/jo-37/perl/ch-2.pl new file mode 100755 index 0000000000..6f8658c2c1 --- /dev/null +++ b/challenge-339/jo-37/perl/ch-2.pl @@ -0,0 +1,92 @@ +#!/usr/bin/perl + +use v5.26; +use Test2::V0 qw(!float -no_srand); +use Test2::Tools::Subtest 'subtest_streamed'; +use Getopt::Long; +use experimental 'signatures'; + +use PDL; + +### Options and Arguments + +my ($tests, $examples, $verbose); +GetOptions( + 'examples!' => \$examples, + 'tests!' => \$tests, + 'verbose!' => \$verbose, +) or usage(); + +run_tests($examples, $tests); # tests do not return + +usage() unless @ARGV; + +sub usage { + die <<~EOS; + $0 - peak point + + usage: $0 [-examples] [-tests] [--] [N...] + + -examples + run the examples from the challenge + + -tests + run some tests + + N... + list of numbers + + EOS +} + + +### Input and Output + +say peak_point(@ARGV); + + +### Implementation +# +# For details see: +# https://github.sommrey.de/the-bears-den/2025/10/17/ch-339.html#task-2 + + +sub peak_point { + max cumusumover pdl 0, @_; +} + + +### Examples and Tests + +sub run_tests ($examples, $tests) { + return unless $examples || $tests; + + state sub run_example ($args, $expected, $name) { + my $result = peak_point(@$args); + is $result, $expected, + "$name: (@$args) -> $expected"; + } + + plan 2; + + $examples ? subtest_streamed(examples => sub { + my @examples = ( + [[-5, 1, 5, -9, 2], 1, 'example 1'], + [[10, 10, 10, -25], 30, 'example 2'], + [[3, -4, 2, 5, -6, 1], 6, 'example 3'], + [[-1, -2, -3, -4], 0, 'example 4'], + [[-10, 15, 5], 10, 'example 5'], + ); + plan scalar @examples; + for (@examples) { + run_example @$_; + } + }) : pass 'skip examples'; + + $tests ? subtest_streamed(tests => sub { + plan 1; + pass 'no tests'; + }) : pass 'skip tests'; + + exit; +} |