1 files changed, 38 insertions, 0 deletions
diff --git a/challenge-208/roger-bell-west/python/ch-1.py b/challenge-208/roger-bell-west/python/ch-1.py
new file mode 100755
index 0000000000..42006d3ac2
--- /dev/null
+++ b/challenge-208/roger-bell-west/python/ch-1.py
@@ -0,0 +1,38 @@
+#! /usr/bin/python3
+
+import unittest
+
+def v2hm(a):
+  h = dict()
+  for i, x in enumerate(a):
+    if x not in h:
+      h[x] = i
+  return h
+
+def minindexsum(a, b):
+  ah = v2hm(a)
+  bh = v2hm(b)
+  out = []
+  mi = len(a) + len(b)
+  for w in a:
+    if w in bh:
+      mv = ah[w] + bh[w]
+      if mv < mi:
+        out = []
+        mi = mv
+      if mv == mi:
+        out.append(w)
+  return out
+
+class TestMinindexsum(unittest.TestCase):
+
+  def test_ex1(self):
+    self.assertEqual(minindexsum(["Perl", "Raku", "Love"], ["Raku", "Perl", "Hate"]), ["Perl", "Raku"], 'example 1')
+
+  def test_ex2(self):
+    self.assertEqual(minindexsum(["A", "B", "C"], ["D", "E", "F"]), [], 'example 2')
+
+  def test_ex3(self):
+    self.assertEqual(minindexsum(["A", "B", "C"], ["C", "A", "B"]), ["A"], 'example 3')
+
+unittest.main()