Week 348 - String time

challenge-348/peter-campbell-smith/blog.txt

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+http://ccgi.campbellsmiths.force9.co.uk/challenge/348

challenge-348/peter-campbell-smith/perl/ch-1.pl

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+#!/usr/bin/perl
+
+# Blog: http://ccgi.campbellsmiths.force9.co.uk/challenge
+
+use v5.26;    # The Weekly Challenge - 2025-11-17
+use utf8;     # Week 348 - task 1 - String alike
+use warnings; # Peter Campbell Smith
+binmode STDOUT, ':utf8';
+use Encode;
+
+string_alike('rhythm');
+string_alike('artifice');
+string_alike('MOONSOUP');
+string_alike('fairzzzz');
+string_alike('uu');
+string_alike('aeioupaeioupaeiuopaeioupaeioupaeiuop');
+string_alike('123+!£ a $#FF & U (]');
+
+sub string_alike {
+
+	my ($string, $output, $size, $half, @count, $c, $h);
+
+	# initialise
+	$string = $_[0];
+	$output = 'false';
+	@count = (0, 0);
+
+	# check for even length
+	$size = length($string);
+	if (($size & 1) == 0) {
+		$half = $size / 2;
+		$h = 0;
+
+		# count vowels
+		for $c (0 .. $size - 1) {		
+			$h = 1 if $c == $half;
+			$count[$h] ++ if substr($string, $c, 1) =~ m|[aeiou]|i;
+		}
+
+		# check for equality
+		if ($count[0] != 0 and $count[0] eq $count[1]) {
+			$output = qq[true - $count[0] vowel] . ($count[0] == 1 ? '' : 's');
+		}
+	}
+
+	say qq[\nInput:  '$string'];
+	say qq[Output: $output];
+}
+

challenge-348/peter-campbell-smith/perl/ch-2.pl

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+#!/usr/bin/perl
+
+# Blog: http://ccgi.campbellsmiths.force9.co.uk/challenge
+
+use v5.26;    # The Weekly Challenge - 2025-11-17
+use utf8;     # Week 348 - task 2 - Convert time
+use warnings; # Peter Campbell Smith
+binmode STDOUT, ':utf8';
+use Encode;
+
+convert_time('02:30', '02:45');
+convert_time('11:55', '12:15');
+convert_time('09:00', '13:00');
+convert_time('23:45', '00:30');
+convert_time('14:20', '15:25');
+convert_time('00:00', '23:59');
+
+sub convert_time {
+
+	my ($from, $till, @chunks, $from_mins, $till_mins, $gap, $j, $ops, $explain);
+
+	# initialise
+	($from, $till) = @_;
+	@chunks = (60, 15, 5, 1);
+	$explain = '';
+
+	# convert to minutes since midnight
+	$from_mins = substr($from, 0, 2) * 60 + substr($from, 3, 2);
+	$till_mins = substr($till, 0, 2) * 60 + substr($till, 3, 2);
+	$till_mins += 24 * 60 if $till_mins < $from_mins;
+	$gap = $till_mins - $from_mins;
+
+	# analyse difference
+	$ops = 0;
+	for $j (0 .. 3) {
+		while ($gap >= $chunks[$j]) {
+			$gap -= $chunks[$j];
+			$ops ++;
+			$explain .= qq[$chunks[$j] + ];
+		}
+	}	
+
+	say qq[\nInput:  \$source = '$from', \$target = '$till'];
+	say qq[Output: $ops : ] . substr($explain, 0, -2);
+}