Merge pull request #7816 from simongreen-net/swg-210

Simon's solution to challenge 210

6 files changed, 135 insertions, 2 deletions

diff --git a/challenge-210/sgreen/README.md b/challenge-210/sgreen/README.md
index f393339e11..0f4559dc5a 100644
--- a/challenge-210/sgreen/README.md
+++ b/challenge-210/sgreen/README.md
@@ -1,3 +1,3 @@
-# The Weekly Challenge 209
+# The Weekly Challenge 210
 
-Blog: [Special Accounts](https://dev.to/simongreennet/special-accounts-5969)
+Blog: [Numbers Challenges](https://dev.to/simongreennet/numbers-challenges-32k1)
diff --git a/challenge-210/sgreen/blog.txt b/challenge-210/sgreen/blog.txt
new file mode 100644
index 0000000000..295399d982
--- /dev/null
+++ b/challenge-210/sgreen/blog.txt
@@ -0,0 +1 @@
+https://dev.to/simongreennet/numbers-challenges-32k1
\ No newline at end of file
diff --git a/challenge-210/sgreen/perl/ch-1.pl b/challenge-210/sgreen/perl/ch-1.pl
new file mode 100755
index 0000000000..0e865f4b13
--- /dev/null
+++ b/challenge-210/sgreen/perl/ch-1.pl
@@ -0,0 +1,28 @@
+#!/usr/bin/env perl
+
+use strict;
+use warnings;
+use feature 'say';
+use experimental 'signatures';
+
+use List::Util qw(sum uniq);
+
+sub main(@array) {
+    my $score = 0;
+
+    # Get all unique numbers
+    foreach my $i (uniq(@array)) {
+        # Calculate the sum of all numbers one less, the same or one more
+        #  than the target
+        my $this_score = sum( grep { $_ >= $i-1 and $_ <= $i+1} @array);
+
+        # Record this score if it is larger
+        if ($score < $this_score) {
+            $score = $this_score;
+        }
+    }
+
+    say $score;
+}
+
+main(@ARGV);
\ No newline at end of file
diff --git a/challenge-210/sgreen/perl/ch-2.pl b/challenge-210/sgreen/perl/ch-2.pl
new file mode 100755
index 0000000000..45e1ebb835
--- /dev/null
+++ b/challenge-210/sgreen/perl/ch-2.pl
@@ -0,0 +1,40 @@
+#!/usr/bin/env perl
+
+use strict;
+use warnings;
+use feature 'say';
+use experimental 'signatures';
+
+sub main (@array) {
+    # Continue until we can't
+  C: while (1) {
+        # Go through each item in the array, get that value and the next
+        foreach my $i ( 0 .. $#array - 1 ) {
+            my $left  = $array[$i];
+            my $right = $array[ $i + 1 ];
+
+            # If the left value is > 0 and the right one is < 0, we have
+            #  a collision
+            if ( $left > 0 and $right < 0 ) {
+                $right = abs($right);
+                if ( $right <= $left ) {
+                    # Remove the right number
+                    splice( @array, $i + 1, 1 );
+                }
+                if ( $right >= $left ) {
+                    # Remove the left number
+                    splice( @array, $i, 1 );
+                }
+
+                # Start the loop again
+                next C;
+            }
+        }
+
+        # We've gone through the list and removed all collisions
+        last;
+    }
+
+    say '(', join( ', ', @array ), ')';
+}
+main(@ARGV);
\ No newline at end of file
diff --git a/challenge-210/sgreen/python/ch-1.py b/challenge-210/sgreen/python/ch-1.py
new file mode 100755
index 0000000000..6ec294ffce
--- /dev/null
+++ b/challenge-210/sgreen/python/ch-1.py
@@ -0,0 +1,25 @@
+#!/usr/bin/env python3
+
+import sys
+
+
+def main(array):
+    score = 0
+
+    # Get all unique numbers
+    for i in set(array):
+        # Calculate the sum of all numbers one less, the same or one more
+        #  than the target
+        this_score = sum(x for x in array if i-1 <= x <= i+1)
+
+        # Record this score if it is larger
+        if score < this_score:
+            score = this_score
+
+    print(score)
+
+
+if __name__ == '__main__':
+    # Turn the strings into integers
+    n = [int(i) for i in sys.argv[1:]]
+    main(n)
diff --git a/challenge-210/sgreen/python/ch-2.py b/challenge-210/sgreen/python/ch-2.py
new file mode 100755
index 0000000000..791d842c48
--- /dev/null
+++ b/challenge-210/sgreen/python/ch-2.py
@@ -0,0 +1,39 @@
+#!/usr/bin/env python3
+
+import sys
+
+
+def main(array):
+    # Continue until we can't
+    should_continue = True
+
+    while should_continue:
+        # Go through each item in the array, get that value and the next
+        for i in range(len(array)-1):
+            left = array[i]
+            right = array[i+1]
+
+            # If the left value is > 0 and the right one is < 0, we have
+            #  a collision
+            if left > 0 and right < 0:
+                right = abs(right)
+                if right <= left:
+                    # Remove the right number
+                    array.pop(i+1)
+                if right >= left:
+                    # Remove the left number
+                    array.pop(i)
+
+                # Start the loop again
+                break
+        else:
+            # We've gone through the list and removed all collisions
+            should_continue = False
+
+    print(array)
+
+
+if __name__ == '__main__':
+    # Turn the strings into integers
+    n = [int(i) for i in sys.argv[1:]]
+    main(n)