diff options
| -rw-r--r-- | challenge-318/jo-37/blog.txt | 1 | ||||
| -rwxr-xr-x | challenge-318/jo-37/perl/ch-1.pl | 95 | ||||
| -rwxr-xr-x | challenge-318/jo-37/perl/ch-2.pl | 109 |
3 files changed, 205 insertions, 0 deletions
diff --git a/challenge-318/jo-37/blog.txt b/challenge-318/jo-37/blog.txt new file mode 100644 index 0000000000..f195df6d9e --- /dev/null +++ b/challenge-318/jo-37/blog.txt @@ -0,0 +1 @@ +https://github.sommrey.de/the-bears-den/2025/04/25/ch-318.html diff --git a/challenge-318/jo-37/perl/ch-1.pl b/challenge-318/jo-37/perl/ch-1.pl new file mode 100755 index 0000000000..4aab4d7f75 --- /dev/null +++ b/challenge-318/jo-37/perl/ch-1.pl @@ -0,0 +1,95 @@ +#!/usr/bin/perl + +use v5.26; +use Test2::V0 -no_srand; +use Test2::Tools::Subtest 'subtest_streamed'; +use Getopt::Long; +use warnings FATAL => 'all'; +use Data::Dump qw(dd pp); +use experimental 'signatures'; + +use List::Util 'pairkeys'; + +### 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 == 1; + +sub usage { + die <<~EOS; + $0 - group position + + usage: $0 [-examples] [-tests] [STR] + + -examples + run the examples from the challenge + + -tests + run some tests + + -verbose + enable trace output + + STR + a string + + EOS +} + + +### Input and Output + +say '"' . join('", "', group_position(shift)) . '"'; + + +### Implementation +# +# For details see: +# https://github.sommrey.de/the-bears-den/2025/04/25/ch-318.html#task-1 + + +sub group_position { + shift =~ /((??{qr{(.)\1{2,}}}))/g; +} + + +### Examples and Tests + +sub run_tests ($examples, $tests) { + return unless $examples || $tests; + + state sub run_example ($args, $expected, $name) { + my $result = [group_position(@$args)]; + is $result, $expected, + "$name: (@$args) -> (@$expected)"; + } + + plan 2; + + $examples ? subtest_streamed(examples => sub { + my @examples = ( + [["abccccd"], ["cccc"], 'example 1'], + [["aaabcddddeefff"], ["aaa", "dddd", "fff"], 'example 2'], + [["abcdd"], [], 'example 3'], + ); + plan scalar @examples; + for (@examples) { + run_example @$_; + } + }) : pass 'skip examples'; + + $tests ? subtest_streamed(tests => sub { + plan 1; + pass 'no tests'; + }) : pass 'skip tests'; + + exit; +} diff --git a/challenge-318/jo-37/perl/ch-2.pl b/challenge-318/jo-37/perl/ch-2.pl new file mode 100755 index 0000000000..412b5cba32 --- /dev/null +++ b/challenge-318/jo-37/perl/ch-2.pl @@ -0,0 +1,109 @@ +#!/usr/bin/perl + +use v5.26; +use Test2::V0 qw(!float -no_srand); +use Test2::Tools::Subtest 'subtest_streamed'; +use Getopt::Long; +use experimental 'signatures'; + +use PDL; +use PDL::NiceSlice; + +### Options and Arguments + +my ($tests, $examples, $verbose); +GetOptions( + 'examples!' => \$examples, + 'tests!' => \$tests, + 'verbose!' => \$verbose, +) or usage(); + +run_tests($examples, $tests); # tests do not return + +usage() unless @ARGV == 2; + +sub usage { + die <<~EOS; + $0 - reverse equals + + usage: $0 [-examples] [-tests] [SOURCE TARGET] + + -examples + run the examples from the challenge + + -tests + run some tests + + SOURCE TARGET + two lists of integers + + EOS +} + + +### Input and Output + +say +(qw(true false))[!reverse_equals(@ARGV)]; + + +### Implementation +# +# For details see: +# https://github.sommrey.de/the-bears-den/2025/04/25/ch-318.html#task-2 + + +sub reverse_equals { + my ($s, $t) = map long($_), @_; + my $ne = which $s != $t; + + $ne->isempty || all $s($ne(-1):$ne(0)) == $t($ne(0):$ne(-1)); +} + + +### Examples and Tests + +sub run_tests ($examples, $tests) { + return unless $examples || $tests; + + state sub run_example ($args, $expected, $name) { + my $result = reverse_equals(@$args); + is $result, $expected, + qq{$name: (@{[map "[@$_]", @$args]}) -> } . $expected->name; + } + + plan 2; + + $examples ? subtest_streamed(examples => sub { + my @examples = ( + [[[3, 2, 1, 4], [1, 2, 3, 4]], T(), 'example 1'], + [[[1, 3, 4], [4, 1, 3]], F(), 'example 2'], + [[[2], [2]], T(), 'example 3'], + ); + plan scalar @examples; + for (@examples) { + run_example @$_; + } + }) : pass 'skip examples'; + + $tests ? subtest_streamed(tests => sub { + plan 8; + ok reverse_equals([2, 3, 5, 13, 11, 7, 17, 19], + [2, 3, 5, 7, 11, 13, 17, 19]), 'std'; + ok reverse_equals([13, 11, 7, 17, 19], + [7, 11, 13, 17, 19]), 'empty prefix'; + ok reverse_equals([2, 3, 5, 13, 11, 7], + [2, 3, 5, 7, 11, 13]), 'no suffix'; + ok !reverse_equals([2, 3, 5, 11, 13, 7, 17, 19], + [2, 3, 5, 7, 11, 13, 17, 19]), 'not reverse'; + ok reverse_equals([13, 11, 7], + [7, 11, 13]), 'reverse odd'; + ok reverse_equals([17, 13, 11, 7], + [7, 11, 13, 17]), 'reverse even'; + ok !reverse_equals([7, 11, 17], + [7, 13, 17]), 'different elements'; + ok reverse_equals([2, 3, 5, 7, 11, 13, 17, 19], + [2, 3, 5, 7, 11, 13, 17, 19]), 'equal'; + }) : pass 'skip tests'; + + exit; +} |