Merge pull request #7642 from simongreen-net/master

Simon's solution to challenge 206

6 files changed, 105 insertions, 2 deletions

diff --git a/challenge-206/sgreen/README.md b/challenge-206/sgreen/README.md
index b2c76ea65b..36f49d2ad5 100644
--- a/challenge-206/sgreen/README.md
+++ b/challenge-206/sgreen/README.md
@@ -1,3 +1,3 @@
-# The Weekly Challenge 205
+# The Weekly Challenge 206
 
-Blog: [Weekly Challenge 205](https://dev.to/simongreennet/weekly-challenge-205-3f3)
+Blog: [Weekly Challenge 206](https://dev.to/simongreennet/weekly-challenge-206-2god)
diff --git a/challenge-206/sgreen/blog.txt b/challenge-206/sgreen/blog.txt
new file mode 100644
index 0000000000..4878a97c80
--- /dev/null
+++ b/challenge-206/sgreen/blog.txt
@@ -0,0 +1 @@
+https://dev.to/simongreennet/weekly-challenge-206-2god
\ No newline at end of file
diff --git a/challenge-206/sgreen/perl/ch-1.pl b/challenge-206/sgreen/perl/ch-1.pl
new file mode 100755
index 0000000000..2850acf9ef
--- /dev/null
+++ b/challenge-206/sgreen/perl/ch-1.pl
@@ -0,0 +1,37 @@
+#!/usr/bin/perl
+
+use strict;
+use warnings;
+use feature 'say';
+use experimental 'signatures';
+
+sub main (@times) {
+    # Let the default shortest time be something larger than everything
+    my $shortest = 24 * 60;
+
+    # Convert the times into minutes after midnight
+    my @minutes = map { substr( $_, 0, 2 ) * 60 + substr( $_, 3, 2 ) } @times;
+
+    # Find all pairs
+    foreach my $t1 ( 0 .. $#minutes - 1 ) {
+        foreach my $t2 ( $t1 + 1 .. $#minutes ) {
+            my $diff = abs( $minutes[$t1] - $minutes[$t2] );
+
+            # If the difference is more than 12 hours, it will be shorter
+            #  if we cross midnight
+            if ( $diff > 12 * 60 ) {
+                $diff = 24 * 60 - $diff;
+            }
+
+            if ( $diff < $shortest ) {
+                # We have found a new shortest span
+                $shortest = $diff;
+            }
+        }
+    }
+
+    # Print the shortest span
+    say $shortest;
+}
+
+main(@ARGV);
\ No newline at end of file
diff --git a/challenge-206/sgreen/perl/ch-2.pl b/challenge-206/sgreen/perl/ch-2.pl
new file mode 100755
index 0000000000..0dc3133b0f
--- /dev/null
+++ b/challenge-206/sgreen/perl/ch-2.pl
@@ -0,0 +1,18 @@
+#!/usr/bin/perl
+
+use strict;
+use warnings;
+use feature 'say';
+use experimental 'signatures';
+
+use List::Util qw(pairkeys sum);
+
+sub main(@n) {
+    # Sort the list numerical
+    @n = sort { $a <=> $b} @n;
+
+    # Return the sum of the the odd positioned items (1st, 3rd, 5th, ...)
+    say sum(pairkeys(@n));
+}
+
+main(@ARGV);
\ No newline at end of file
diff --git a/challenge-206/sgreen/python/ch-1.py b/challenge-206/sgreen/python/ch-1.py
new file mode 100755
index 0000000000..eb522292f9
--- /dev/null
+++ b/challenge-206/sgreen/python/ch-1.py
@@ -0,0 +1,30 @@
+#!/usr/bin/env python3
+
+import sys
+
+
+def main(times):
+    # Let the default shortest time be something larger than everything
+    shortest = 24*60
+
+    # Convert the times into minutes after midnight
+    minutes = [int(t[0:2]) * 60 + int(t[3:5]) for t in times]
+
+    # Find all pairs
+    for t1 in range(len(minutes)-1):
+        for t2 in range(t1+1, len(minutes)):
+            diff = abs(minutes[t1] - minutes[t2])
+            # If the difference is more than 12 hours, it will be shorter if we cross midnight
+            if diff > 12 * 60:
+                diff = 24 * 60 - diff
+
+            if diff < shortest:
+                # We have found a new shortest span
+                shortest = diff
+
+    # Print the shortest span
+    print(shortest)
+
+
+if __name__ == '__main__':
+    main(sys.argv[1:])
diff --git a/challenge-206/sgreen/python/ch-2.py b/challenge-206/sgreen/python/ch-2.py
new file mode 100755
index 0000000000..4a1e700194
--- /dev/null
+++ b/challenge-206/sgreen/python/ch-2.py
@@ -0,0 +1,17 @@
+#!/usr/bin/env python3
+
+import sys
+
+
+def main(n):
+    # Sort the list numerical
+    n = sorted(n)
+
+    # Return the sum of the the odd positioned items (1st, 3rd, 5th, ...)
+    print(sum(n[::2]))
+
+
+if __name__ == '__main__':
+    # Turn the strings into integers
+    n = [int(i) for i in sys.argv[1:]]
+    main(n)