Perl & Raku solutions to Tasks 1 & 2 for Week 331

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diff --git a/challenge-331/athanasius/perl/ch-1.pl b/challenge-331/athanasius/perl/ch-1.pl
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+#!perl
+
+################################################################################
+=comment
+
+Perl Weekly Challenge 331
+=========================
+
+TASK #1
+-------
+*Last Word*
+
+Submitted by: Mohammad Sajid Anwar
+
+You are given a string.
+
+Write a script to find the length of last word in the given string.
+
+Example 1
+
+  Input: $str = "The Weekly Challenge"
+  Output: 9
+
+Example 2
+
+  Input: $str = "   Hello   World    "
+  Output: 5
+
+Example 3
+
+  Input: $str = "Let's begin the fun"
+  Output: 3
+
+=cut
+################################################################################
+
+#--------------------------------------#
+# Copyright © 2025 PerlMonk Athanasius #
+#--------------------------------------#
+
+#===============================================================================
+=comment
+
+Interface
+---------
+1. If no command-line arguments are given, the test suite is run. Otherwise:
+2. A string is entered on the command-line.
+
+Assumption
+----------
+All non-word characters, including punctuation, are to be handled like the
+whitespace in the Examples.
+
+=cut
+#===============================================================================
+
+use v5.32;         # Enables strictures
+use warnings;
+use Const::Fast;
+use Test::More;
+
+const my $USAGE => <<END;
+Usage:
+  perl $0 <str>
+  perl $0
+
+    <str>    A string
+END
+
+#-------------------------------------------------------------------------------
+BEGIN
+#-------------------------------------------------------------------------------
+{
+    $| = 1;
+    print "\nChallenge 331, Task #1: Last Word (Perl)\n\n";
+}
+
+#===============================================================================
+MAIN:
+#===============================================================================
+{
+    my $argc = scalar @ARGV;
+
+    if    ($argc == 0)
+    {
+        run_tests();
+    }
+    elsif ($argc == 1)
+    {
+        my $str = $ARGV[ 0 ];
+
+        print qq[Input:  \$str = "$str"\n];
+
+        my $length = find_last_word_len( $str );
+
+        print "Output: $length\n";
+    }
+    else
+    {
+        error( "Expected 1 or 0 command-line arguments, found $argc" );
+    }
+}
+
+#-------------------------------------------------------------------------------
+sub find_last_word_len
+#-------------------------------------------------------------------------------
+{
+    my ($str) = @_;
+
+    $str =~ / (\w+) \W* $ /x;
+
+    return length( $1 // '' );
+}
+
+#-------------------------------------------------------------------------------
+sub run_tests
+#-------------------------------------------------------------------------------
+{
+    print "Running the test suite\n";
+
+    while (my $line = <DATA>)
+    {
+        chomp $line;
+
+        my  ($test_name, $str, undef, $expected) = split / \| /x, $line;
+
+        for ($test_name, $expected)
+        {
+            s/ ^ \s+   //x;
+            s/   \s+ $ //x;
+        }
+
+        my $length = find_last_word_len( $str );
+
+        is $length, $expected, $test_name;
+    }
+
+    done_testing;
+}
+
+#-------------------------------------------------------------------------------
+sub error
+#-------------------------------------------------------------------------------
+{
+    my ($message) = @_;
+
+    die "ERROR: $message\n$USAGE";
+}
+
+################################################################################
+
+__DATA__
+Example 1|The Weekly Challenge|               | 9
+Example 2|   Hello   World    |               | 5
+Example 3|Let's begin the fun|                | 3
+Question |Is this a good question?|           | 8
+Empty    ||                                   | 0
+No words |. ### //??? * &&& ! #/?*|           | 0
+Long word|Supercalifragilisticexpialidocious!||34