Week 245

2 files changed, 64 insertions, 0 deletions

diff --git a/challenge-245/cheok-yin-fung/perl/ch-1.pl b/challenge-245/cheok-yin-fung/perl/ch-1.pl
new file mode 100644
index 0000000000..a1dd2c01ce
--- /dev/null
+++ b/challenge-245/cheok-yin-fung/perl/ch-1.pl
@@ -0,0 +1,16 @@
+# The Weekly Challenge 245
+# Task 1 Sort Language
+use v5.30.0;
+use warnings;
+
+sub sl {
+    my @lang = $_[0]->@*;
+    my @pop = $_[1]->@*;
+    my @nlang = map { $lang[$_] } sort { $pop[$a] <=> $pop[$b] } 0..$#lang;
+    return [@nlang];
+}
+
+use Test::More tests=>2;
+use Test::Deep;
+cmp_deeply sl(['perl','c','python'],[2,1,3]), ['c','perl','python'];
+cmp_deeply sl(['c++','haskell','java'],[1,3,2]), ['c++','java','haskell'];
diff --git a/challenge-245/cheok-yin-fung/perl/ch-2.pl b/challenge-245/cheok-yin-fung/perl/ch-2.pl
new file mode 100644
index 0000000000..a5d1b511cf
--- /dev/null
+++ b/challenge-245/cheok-yin-fung/perl/ch-2.pl
@@ -0,0 +1,48 @@
+# The Weekly Challenge 245
+# Task 2 Largest of Three
+use v5.30.0;
+use warnings;
+use List::Util qw/sum min/;
+
+sub lot {
+    my @ints = @_;
+    my $idr = sum(map {$_ % 3} @ints) % 3;
+    if ($idr != 0) {
+        my $unwanted2 = -12;
+        my $unwanted = min grep {$idr == $_ % 3} @ints;
+        my $unwill = 1;
+        if (!$unwanted) {
+            my @unwants = sort {$a<=>$b} grep {($idr+1) % 3 == $_ % 3} @ints;
+            $unwanted = $unwants[0];
+            $unwanted2 = $unwants[1];
+            return -1 if !$unwanted2;
+        }
+        my @nints;
+        for my $z (@ints) {
+            if ($z == $unwanted || $z == $unwanted2) {
+                $unwill--;
+                $unwanted = -11 if $z == $unwanted;
+                $unwanted = -12 if $z == $unwanted2;
+            }
+            else {
+                push @nints, $z;
+            }
+        }
+        return -1 if scalar @nints == 0;
+        return join "", sort {$b<=>$a} @nints;
+    }
+    else {
+        return -1 if scalar @ints == 0;
+        return join "", sort {$b<=>$a} @ints;
+    }
+}
+
+
+use Test::More tests=>7;
+ok lot(8,1,9) == 981;
+ok lot(8,6,7,1,0) == 8760;
+ok lot(1) == -1;
+ok lot(1,2) == 21;
+ok lot(1,2,2) == 21;
+ok lot(2,2) == -1;
+ok lot(2,2,3,6,9) == 963;