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| -rwxr-xr-x | challenge-334/jo-37/perl/ch-1.pl | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/challenge-334/jo-37/perl/ch-1.pl b/challenge-334/jo-37/perl/ch-1.pl new file mode 100755 index 0000000000..5938e4345b --- /dev/null +++ b/challenge-334/jo-37/perl/ch-1.pl @@ -0,0 +1,111 @@ +#!/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, $from, $to); +GetOptions( + 'examples!' => \$examples, + 'tests!' => \$tests, + 'verbose!' => \$verbose, + 'from=i' => \$from, + 'to=i' => \$to, +) or usage(); + +run_tests($examples, $tests); # tests do not return + +usage() unless @ARGV && defined($from) && defined($to); + +sub usage { + die <<~EOS; + $0 - range sum + + usage: $0 [-examples] [-tests] [-from F -to T N...] + + -examples + run the examples from the challenge + + -tests + run some tests + + -from F + start index + + -to T + end index + + N... + list of numbers + + EOS +} + + +### Input and Output + +say range_sum($from, $to, @ARGV); + + +### Implementation +# +# For details see: +# https://github.sommrey.de/the-bears-den/2025/08/17/ch-334.html#task-1 + + +sub range_sum ($x, $y, @ints) { + pdl(@ints)->($x:$y)->sum; +} + + +### Examples and Tests + +sub run_tests ($examples, $tests) { + return unless $examples || $tests; + + state sub run_example ($args, $expected, $name) { + my $result = range_sum(@$args); + is $result, $expected, + "$name: ($args->@[2..$#$args]), x=$args->[0], y=$args->[1] -> $expected"; + } + + plan 2; + + $examples ? subtest_streamed(examples => sub { + my @examples = ( + [[(0, 2) ,=> (-2, 0, 3, -5, 2, -1)], 1, 'example 1'], + [[(1, 3) ,=> (1, -2, 3, -4, 5)], -3, 'example 2'], + [[(3, 4) ,=> (1, 0, 2, -1, 3)], 2, 'example 3'], + [[(0, 3) ,=> (-5, 4, -3, 2, -1, 0)], -2, 'example 4'], + [[(0, 2) ,=> (-1, 0, 2, -3, -2, 1)], 1, 'example 5'], + ); + plan scalar @examples; + for (@examples) { + run_example @$_; + } + }) : pass 'skip examples'; + + $tests ? subtest_streamed(tests => sub { + my @tests = ( + [[(1, 2) ,=> (1, 2, 4, 8, 16)], 6, 'std'], + [[(2, 1) ,=> (1, 2, 4, 8, 16)], 6, 'reverse'], + [[(1, -3) ,=> (1, 2, 4, 8, 16)], 6, 'y from end'], + [[(-4, 2) ,=> (1, 2, 4, 8, 16)], 6, 'x from end'], + [[(-4, -3) ,=> (1, 2, 4, 8, 16)], 6, 'both from end'], + [[(-3, -4) ,=> (1, 2, 4, 8, 16)], 6, 'both from end, reverse'], + ); + plan scalar @tests; + for (@tests) { + run_example @$_; + } + }) : pass 'skip tests'; + + exit; +} |