sgreen solutions to challenge 145

6 files changed, 117 insertions, 3 deletions

diff --git a/challenge-145/sgreen/README.md b/challenge-145/sgreen/README.md
index 85b71b378f..cf23ccf502 100644
--- a/challenge-145/sgreen/README.md
+++ b/challenge-145/sgreen/README.md
@@ -1,4 +1,3 @@
-# The Weekly Challenge 144
+# The Weekly Challenge 145
 
-Solution by Simon Green. Sorry, no blog this week. Hopefully the code
-is easy enough to understand.
+Solution by Simon Green. [Blog](https://dev.to/simongreennet/weekly-challenge-145-4kho)
diff --git a/challenge-145/sgreen/blog.txt b/challenge-145/sgreen/blog.txt
new file mode 100644
index 0000000000..50ca8d8ff9
--- /dev/null
+++ b/challenge-145/sgreen/blog.txt
@@ -0,0 +1 @@
+https://dev.to/simongreennet/weekly-challenge-145-4kho
diff --git a/challenge-145/sgreen/perl/ch-1.pl b/challenge-145/sgreen/perl/ch-1.pl
new file mode 100755
index 0000000000..4b6a431082
--- /dev/null
+++ b/challenge-145/sgreen/perl/ch-1.pl
@@ -0,0 +1,27 @@
+#!/usr/bin/env perl
+
+use strict;
+use warnings;
+use feature 'say';
+use List::Util 'sum';
+
+sub main {
+    my @first_nums  = ( shift =~ /(-?\d+(?:\.\d+)?)/gm );
+    my @second_nums = ( shift =~ /(-?\d+(?:\.\d+)?)/gm );
+
+    if ( @first_nums != @second_nums ) {
+        die "Arrays are of different lengths\n";
+    }
+
+    my @dots = ();
+    my @sums = ();
+
+    foreach my $i ( 0 .. $#first_nums ) {
+        push @dots, "($first_nums[$i] × $second_nums[$i])";
+        push @sums, $first_nums[$i] * $second_nums[$i];
+    }
+
+    say join( ' + ', @dots ), ' => ', join( ' + ', @sums ), ' => ', sum(@sums);
+}
+
+main(@ARGV);
diff --git a/challenge-145/sgreen/perl/ch-2.pl b/challenge-145/sgreen/perl/ch-2.pl
new file mode 100755
index 0000000000..eee8054ad5
--- /dev/null
+++ b/challenge-145/sgreen/perl/ch-2.pl
@@ -0,0 +1,32 @@
+#!/usr/bin/env perl
+
+use strict;
+use warnings;
+use feature 'say';
+use List::Util 'none';
+
+sub main {
+    my $word    = shift;
+    my @strings = ();
+
+    # Make the starting point from each character
+    foreach my $i ( 0 .. length($word) - 1 ) {
+
+        # And the end point
+        foreach my $j ( $i .. length($word) ) {
+
+            # This is string we will examine
+            my $s = substr( $word, $i, $j - $i );
+
+            # If we don't already know about it, and it's palindromic, add
+            #  it to the string array
+            if ( none { $s eq $_ } @strings and $s eq reverse($s) ) {
+                push @strings, $s;
+            }
+        }
+    }
+
+    say join ' ', @strings;
+}
+
+main(@ARGV);
diff --git a/challenge-145/sgreen/python/ch-1.py b/challenge-145/sgreen/python/ch-1.py
new file mode 100755
index 0000000000..7c18890304
--- /dev/null
+++ b/challenge-145/sgreen/python/ch-1.py
@@ -0,0 +1,28 @@
+#!/usr/bin/env python
+
+import sys
+import re
+
+
+def main(inputs):
+    first_nums = list(map(int, re.findall(r'-?\d+', inputs[0])))
+    second_nums = list(map(int, re.findall(r'-?\d+', inputs[1])))
+
+    if len(first_nums) != len(second_nums):
+        raise ValueError('Arrays are of different lengths')
+
+    dots = []
+    sums = []
+    for i in range(len(first_nums)):
+        dots.append(f'({first_nums[i]} × {second_nums[i]})')
+        sums.append(first_nums[i] * second_nums[i])
+
+    print(' + '.join(dots) +
+          ' => ' +
+          ' + '.join(map(str, sums)) +
+          ' => ' +
+          str(sum(sums)))
+
+
+if __name__ == '__main__':
+    main(sys.argv[1:])
diff --git a/challenge-145/sgreen/python/ch-2.py b/challenge-145/sgreen/python/ch-2.py
new file mode 100755
index 0000000000..65ed569178
--- /dev/null
+++ b/challenge-145/sgreen/python/ch-2.py
@@ -0,0 +1,27 @@
+#!/usr/bin/env python
+
+import sys
+
+
+def main(word):
+    strings = []
+
+    # Make the starting point from each character
+    for i in range(len(word)):
+
+        # And the end point
+        for j in range(i, len(word)):
+
+            # This is string we will examine
+            s = word[i:j + 1]
+
+            # If we don't already know about it, and it's palindromic, add
+            #  it to the string array
+            if s not in strings and s == s[::-1]:
+                strings.append(s)
+
+    print(*strings, sep=' ')
+
+
+if __name__ == '__main__':
+    main(sys.argv[1])