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#!/usr/bin/env perl
# vim:set ts=4 sw=4 sts=4 et ai wm=0 nu:
#=============================================================================
# Copyright (c) 2025, Bob Lied
#=============================================================================
# ch-1.pl Perl Weekly Challenge 331 Task 1 Last Word
#=============================================================================
# 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
#=============================================================================
use v5.40;
use Getopt::Long;
my $Verbose = false;
my $DoTest = false;
my $Benchmark = 0;
GetOptions("test" => \$DoTest, "verbose" => \$Verbose, "benchmark:i" => \$Benchmark);
my $logger;
{
use Log::Log4perl qw(:easy);
Log::Log4perl->easy_init({ level => ($Verbose ? $DEBUG : $INFO ),
layout => "%d{HH:mm:ss.SSS} %p{1} %m%n" });
$logger = Log::Log4perl->get_logger();
}
#=============================================================================
exit(!runTest()) if $DoTest;
exit( runBenchmark($Benchmark) ) if $Benchmark;
say lastWord("@ARGV");
#=============================================================================
sub lastWord($str)
{
my $last = (split(/ /, $str))[-1] // "";
$last =~ s/[[:punct:]]+$//;
$last =~ s/^[[:punct:]]+//;
return length($last);
}
sub runTest
{
use Test2::V0;
is( lastWord("The Weekly Challenge"), 9, "Example 1");
is( lastWord(" Hello World "), 5, "Example 2");
is( lastWord("Let's begin the fun"), 3, "Example 3");
is( lastWord(""), 0, "Empty string");
is( lastWord("word"), 4, "One word");
is( lastWord("The ('dogs)'?"), 4, "Surrounded by punctation");
is( lastWord("What abous the dog's"), 5, "Possessive/contraction");
done_testing;
}
sub runBenchmark($repeat)
{
use Benchmark qw/cmpthese/;
cmpthese($repeat, {
label => sub { },
});
}
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