Challenge 2 answers

3 files changed, 45 insertions, 0 deletions

diff --git a/challenge-001/kian-meng-ang/blog.txt b/challenge-001/kian-meng-ang/blog.txt
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+++ b/challenge-001/kian-meng-ang/blog.txt
@@ -0,0 +1 @@
+https://www.kianmeng.org/2019/04/perl-weekly-challenge-001-2019-week-13.html
diff --git a/challenge-002/kian-meng-ang/perl5/ch-1.sh b/challenge-002/kian-meng-ang/perl5/ch-1.sh
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+++ b/challenge-002/kian-meng-ang/perl5/ch-1.sh
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+#!/usr/bin/env bash
+
+perl -E "say int shift" 0001090000
+perl -E "say int shift" "0001090000"
diff --git a/challenge-002/kian-meng-ang/perl5/ch-2.pl b/challenge-002/kian-meng-ang/perl5/ch-2.pl
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index 0000000000..716587e4ce
--- /dev/null
+++ b/challenge-002/kian-meng-ang/perl5/ch-2.pl
@@ -0,0 +1,40 @@
+#!/usr/bin/env perl
+
+use Modern::Perl;
+use Test::More;
+
+sub to_base35 {
+    my ($num) = @_;
+
+    die if ($num < 0);
+
+    return $num if ($num == 0);
+
+    my @chars = (0..9, 'a'..'y');
+    my $base = scalar @chars;
+    my $result;
+    while ($num) {
+        my $remainder = $num % $base;
+        $num = int($num / $base);
+        $result .= $chars[$remainder];
+    }
+    return scalar reverse($result);
+}
+
+my %test_numbers = (
+    0 => 0,
+    10 => 'a',
+    100 => '2u',
+    1000 => 'sk',
+    10000 => '85p',
+    100000 => '2bm5',
+);
+
+while (my ($from, $to) = each (%test_numbers)) {
+    is(to_base35($from, 35), $to, qq|expect base 10: $from to base 35: $to match|);
+}
+done_testing;
+
+1;
+# vi:et:sw=4 ts=4 ft=perl
+