Merge pull request #10637 from simongreen-net/master

sgreen solutions to challenge 282

7 files changed, 141 insertions, 2 deletions

diff --git a/challenge-282/sgreen/README.md b/challenge-282/sgreen/README.md
index 5716a00b5c..eff69133e3 100644
--- a/challenge-282/sgreen/README.md
+++ b/challenge-282/sgreen/README.md
@@ -1,3 +1,3 @@
-# The Weekly Challenge 281
+# The Weekly Challenge 282
 
-Blog: [The one about a chess board](https://dev.to/simongreennet/the-one-about-a-chess-board-57mh)
+Blog: [Good keys](https://dev.to/simongreennet/good-keys-2elk)
diff --git a/challenge-282/sgreen/bog.txt b/challenge-282/sgreen/bog.txt
new file mode 100644
index 0000000000..c1f10b4c52
--- /dev/null
+++ b/challenge-282/sgreen/bog.txt
@@ -0,0 +1 @@
+https://dev.to/simongreennet/good-keys-2elk
\ No newline at end of file
diff --git a/challenge-282/sgreen/perl/ch-1.pl b/challenge-282/sgreen/perl/ch-1.pl
new file mode 100755
index 0000000000..6880f6d5e7
--- /dev/null
+++ b/challenge-282/sgreen/perl/ch-1.pl
@@ -0,0 +1,26 @@
+#!/usr/bin/env perl
+
+use strict;
+use warnings;
+use feature 'say';
+use experimental 'signatures';
+
+sub main ($int) {
+    my @value  = split //, $int;
+    my $length = scalar(@value);
+
+    foreach my $pos ( 0 .. $length - 3 ) {
+        if (    $value[$pos] == $value[ $pos + 1 ]
+            and $value[$pos] == $value[ $pos + 2 ]
+            and ( $pos == 0 or $value[$pos] != $value[ $pos - 1 ] )
+            and ( $pos + 3 == $length or $value[$pos] != $value[ $pos + 3 ] ) )
+        {
+            say $value[$pos] x 3;
+            return;
+        }
+    }
+
+    say '-1';
+}
+
+main( $ARGV[0] );
\ No newline at end of file
diff --git a/challenge-282/sgreen/perl/ch-2.pl b/challenge-282/sgreen/perl/ch-2.pl
new file mode 100755
index 0000000000..9664def925
--- /dev/null
+++ b/challenge-282/sgreen/perl/ch-2.pl
@@ -0,0 +1,29 @@
+#!/usr/bin/env perl
+
+use strict;
+use warnings;
+use feature 'say';
+use experimental 'signatures';
+
+sub main ($str) {
+    # Convert the string to lower case
+    $str = lc $str;
+
+    # Start with the first letter
+    my $current_key = substr( $str, 0, 1 );
+
+    # Count the number of times we change keys
+    my $changes = 0;
+
+    foreach my $letter ( split //, $str ) {
+        if ( $letter ne $current_key ) {
+            # We need to change key
+            $current_key = $letter;
+            $changes++;
+        }
+    }
+
+    say $changes;
+}
+
+main( $ARGV[0] );
\ No newline at end of file
diff --git a/challenge-282/sgreen/python/ch-1.py b/challenge-282/sgreen/python/ch-1.py
new file mode 100755
index 0000000000..91178462c1
--- /dev/null
+++ b/challenge-282/sgreen/python/ch-1.py
@@ -0,0 +1,30 @@
+#!/usr/bin/env python3
+
+import sys
+
+
+def good_integer(n: int) -> str:
+    # Convert the integer to a string
+    value = str(n)
+    length = len(value)
+
+    for pos in range(length-2):
+        if (
+            value[pos] == value[pos+1]
+            and value[pos] == value[pos+2]
+            and (pos == 0 or value[pos] != value[pos-1])
+            and (pos + 3 == length or value[pos] != value[pos+3])
+        ):
+            return value[pos:pos+3]
+
+    return '-1'
+
+
+def main():
+    # Convert input into an integer
+    result = good_integer(int(sys.argv[1]))
+    print(result)
+
+
+if __name__ == '__main__':
+    main()
diff --git a/challenge-282/sgreen/python/ch-2.py b/challenge-282/sgreen/python/ch-2.py
new file mode 100755
index 0000000000..4673e3aef7
--- /dev/null
+++ b/challenge-282/sgreen/python/ch-2.py
@@ -0,0 +1,32 @@
+#!/usr/bin/env python3
+
+import sys
+
+
+def key_changes(s: str) -> int:
+    # Convert the string to lower case
+    s = s.lower()
+
+    # Start with the first letter
+    current_key = s[0]
+
+    # Count the number of times we change keys
+    changes = 0
+
+    for letter in s:
+        if letter != current_key:
+            # We need to change key
+            current_key = letter
+            changes += 1
+
+    return changes
+
+
+def main():
+    # Convert input into integers
+    result = key_changes(sys.argv[1])
+    print(result)
+
+
+if __name__ == '__main__':
+    main()
diff --git a/challenge-282/sgreen/python/test.py b/challenge-282/sgreen/python/test.py
new file mode 100755
index 0000000000..d9a717e276
--- /dev/null
+++ b/challenge-282/sgreen/python/test.py
@@ -0,0 +1,21 @@
+#!/usr/bin/env python3
+
+import unittest
+ch_1 = __import__('ch-1')
+ch_2 = __import__('ch-2')
+
+
+class TestClass(unittest.TestCase):
+    def test_ch_1(self):
+        self.assertEqual(ch_1.good_integer(12344456), '444')
+        self.assertEqual(ch_1.good_integer(1233334), '-1')
+        self.assertEqual(ch_1.good_integer(10020003), '000')
+
+    def test_ch_2(self):
+        self.assertEqual(ch_2.key_changes('pPeERrLl'), 3)
+        self.assertEqual(ch_2.key_changes('rRr'), 0)
+        self.assertEqual(ch_2.key_changes('GoO'), 1)
+
+
+if __name__ == '__main__':
+    unittest.main()