From 35b8172b1d093b06bb78b388e5e32b3c71be5000 Mon Sep 17 00:00:00 2001
From: Paulo Custodio <pauloscustodio@gmail.com>
Date: Tue, 5 Apr 2022 15:28:06 +0100
Subject: Add Perl solution to challenge 039

---
 challenge-039/paulo-custodio/Makefile      |  2 ++
 challenge-039/paulo-custodio/README        |  1 +
 challenge-039/paulo-custodio/perl/ch-1.pl  | 42 ++++++++++++++++++++++++++++++
 challenge-039/paulo-custodio/perl/ch-2.pl  | 27 +++++++++++++++++++
 challenge-039/paulo-custodio/t/test-1.yaml |  5 ++++
 challenge-039/paulo-custodio/t/test-2.yaml | 20 ++++++++++++++
 6 files changed, 97 insertions(+)
 create mode 100644 challenge-039/paulo-custodio/Makefile
 create mode 100644 challenge-039/paulo-custodio/README
 create mode 100644 challenge-039/paulo-custodio/perl/ch-1.pl
 create mode 100644 challenge-039/paulo-custodio/perl/ch-2.pl
 create mode 100644 challenge-039/paulo-custodio/t/test-1.yaml
 create mode 100644 challenge-039/paulo-custodio/t/test-2.yaml

diff --git a/challenge-039/paulo-custodio/Makefile b/challenge-039/paulo-custodio/Makefile
new file mode 100644
index 0000000000..c3c762d746
--- /dev/null
+++ b/challenge-039/paulo-custodio/Makefile
@@ -0,0 +1,2 @@
+all:
+	perl ../../challenge-001/paulo-custodio/test.pl
diff --git a/challenge-039/paulo-custodio/README b/challenge-039/paulo-custodio/README
new file mode 100644
index 0000000000..87dc0b2fbd
--- /dev/null
+++ b/challenge-039/paulo-custodio/README
@@ -0,0 +1 @@
+Solution by Paulo Custodio
diff --git a/challenge-039/paulo-custodio/perl/ch-1.pl b/challenge-039/paulo-custodio/perl/ch-1.pl
new file mode 100644
index 0000000000..a402e847ef
--- /dev/null
+++ b/challenge-039/paulo-custodio/perl/ch-1.pl
@@ -0,0 +1,42 @@
+#!/usr/bin/env perl
+
+# Challenge 039
+#
+# TASK #1
+# A guest house had a policy that the light remain ON as long as the at least
+# one guest is in the house. There is guest book which tracks all guest in/out
+# time. Write a script to find out how long in minutes the light were ON.
+# Guest Book
+# 1) Alex    IN: 09:10 OUT: 09:45
+# 2) Arnold  IN: 09:15 OUT: 09:33
+# 3) Bob     IN: 09:22 OUT: 09:55
+# 4) Charlie IN: 09:25 OUT: 10:05
+# 5) Steve   IN: 09:33 OUT: 10:01
+# 6) Roger   IN: 09:44 OUT: 10:12
+# 7) David   IN: 09:57 OUT: 10:23
+# 8) Neil    IN: 10:01 OUT: 10:19
+# 9) Chris   IN: 10:10 OUT: 11:00
+
+use Modern::Perl;
+use Time::Interval;
+use Date::Parse;
+
+my $min_intervals = coalesce([
+                ['09:10', '09:45'],
+                ['09:15', '09:33'],
+                ['09:22', '09:55'],
+                ['09:25', '10:05'],
+                ['09:33', '10:01'],
+                ['09:44', '10:12'],
+                ['09:57', '10:23'],
+                ['10:01', '10:19'],
+                ['10:10', '11:00'],
+]);
+
+my $minutes = 0;
+for (@$min_intervals) {
+    my $s = str2time($_->[0])/60;
+    my $e = str2time($_->[1])/60;
+    $minutes += $e-$s;
+}
+say $minutes;
diff --git a/challenge-039/paulo-custodio/perl/ch-2.pl b/challenge-039/paulo-custodio/perl/ch-2.pl
new file mode 100644
index 0000000000..86f2877b47
--- /dev/null
+++ b/challenge-039/paulo-custodio/perl/ch-2.pl
@@ -0,0 +1,27 @@
+#!/usr/bin/env perl
+
+# Challenge 039
+#
+# TASK #2
+# Contributed by Andrezgz
+# Write a script to demonstrate Reverse Polish notation(RPN). Checkout the wiki
+# page for more information about RPN.
+
+use Modern::Perl;
+
+# simple rpn calculator
+my @stack;
+my %dispatch = (
+    '+' => sub { my $b = pop @stack; my $a = pop @stack; push @stack, $a+$b; },
+    '-' => sub { my $b = pop @stack; my $a = pop @stack; push @stack, $a-$b; },
+    '*' => sub { my $b = pop @stack; my $a = pop @stack; push @stack, $a*$b; },
+    '/' => sub { my $b = pop @stack; my $a = pop @stack; push @stack, $a/$b; },
+    '.' => sub { say pop @stack; },
+);
+
+for (split //, "@ARGV") {
+    if (/\s/) {}
+    elsif (/\d/) { push @stack, $_; }
+    elsif (exists $dispatch{$_}) { $dispatch{$_}->(); }
+    else { die "invalid operation: $_"; }
+}
diff --git a/challenge-039/paulo-custodio/t/test-1.yaml b/challenge-039/paulo-custodio/t/test-1.yaml
new file mode 100644
index 0000000000..f3c968762c
--- /dev/null
+++ b/challenge-039/paulo-custodio/t/test-1.yaml
@@ -0,0 +1,5 @@
+- setup:
+  cleanup:
+  args:
+  input:
+  output:   110
diff --git a/challenge-039/paulo-custodio/t/test-2.yaml b/challenge-039/paulo-custodio/t/test-2.yaml
new file mode 100644
index 0000000000..746bd8389b
--- /dev/null
+++ b/challenge-039/paulo-custodio/t/test-2.yaml
@@ -0,0 +1,20 @@
+- setup:
+  cleanup:
+  args:     1 3 + .
+  input:
+  output:   4
+- setup:
+  cleanup:
+  args:     1 3 - .
+  input:
+  output:   -2
+- setup:
+  cleanup:
+  args:     '"3 2 * ."'
+  input:
+  output:   6
+- setup:
+  cleanup:
+  args:     3 2 / .
+  input:
+  output:   1.5
-- 
cgit