1 files changed, 25 insertions, 0 deletions
diff --git a/challenge-249/roger-bell-west/python/ch-1.py b/challenge-249/roger-bell-west/python/ch-1.py
new file mode 100755
index 0000000000..e086773409
--- /dev/null
+++ b/challenge-249/roger-bell-west/python/ch-1.py
@@ -0,0 +1,25 @@
+#! /usr/bin/python3
+
+def shortestdistance(a0):
+  if len(a0) % 2 != 0:
+    return []
+  a = a0
+  a.sort()
+  out = []
+  for i in range(0, len(a), 2):
+    if a[i] != a[i+1]:
+      return []
+    out.append([a[i], a[i]])
+  return out
+
+import unittest
+
+class TestShortestdistance(unittest.TestCase):
+
+  def test_ex1(self):
+    self.assertEqual(shortestdistance([3, 2, 3, 2, 2, 2]), [[2, 2], [2, 2], [3, 3]], 'example 1')
+
+  def test_ex2(self):
+    self.assertEqual(shortestdistance([1, 2, 3, 4]), [], 'example 2')
+
+unittest.main()