Merge pull request #12579 from wlmb/challenges

Solve PWC336

3 files changed, 51 insertions, 0 deletions

diff --git a/challenge-336/wlmb/blog.txt b/challenge-336/wlmb/blog.txt
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+https://wlmb.github.io/2025/08/25/PWC336/
diff --git a/challenge-336/wlmb/perl/ch-1.pl b/challenge-336/wlmb/perl/ch-1.pl
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+++ b/challenge-336/wlmb/perl/ch-1.pl
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+#!/usr/bin/env perl
+# Perl weekly challenge 336
+# Task 1:  Equal Group
+#
+# See https://wlmb.github.io/2025/08/25/PWC336/#task-1-equal-group
+use v5.36;
+use Math::Prime::Util qw(gcd);
+die <<~"FIN" unless @ARGV;
+    Usage: $0 S1 S2...
+    to find if the space separated numbers Nj within the string Ni
+    may be grouped into equal sized groups of two or more elements.
+    FIN
+for(@ARGV){
+    my %count;
+    $count{$_}++ for split " ";
+    say "$_ -> ", gcd(values %count) > 1?"True":"False";
+}
diff --git a/challenge-336/wlmb/perl/ch-2.pl b/challenge-336/wlmb/perl/ch-2.pl
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+#!/usr/bin/env perl
+# Perl weekly challenge 336
+# Task 2:  Final Score
+#
+# See https://wlmb.github.io/2025/08/25/PWC336/#task-2-final-score
+use v5.36;
+use List::Util qw(sum0);
+use feature qw(try);
+die <<~"FIN" unless @ARGV;
+    Usage: $0 S1 S2...
+    to perform the space separated operations Oj  in strings Si
+    and print the resulting score.
+    The operations are
+       a number, push it
+       +, push the sum of the last two numbers
+       C, clear the last number
+       D, push twice the last number
+    FIN
+for(@ARGV){
+    my @scores;
+    try {
+	for(split " "){
+	    push(@scores, ($scores[-1]//0)+($scores[-2]//0)), next if /^\+$/;
+	    push(@scores, ($scores[-1]//0)*2), next if /^D|d$/;
+	    @scores&&pop(@scores), next if /^C|c$/;
+	    push(@scores, $_), next if /^(\+|-)?\d+$/;
+	    die "Expected +, D, C or number: $_";
+	}
+	say "$_ -> ", sum0 @scores;
+    } catch($e) {
+	say $e;
+    }
+}