1 files changed, 32 insertions, 0 deletions
diff --git a/challenge-325/roger-bell-west/python/ch-1.py b/challenge-325/roger-bell-west/python/ch-1.py
new file mode 100755
index 0000000000..87cc81ae31
--- /dev/null
+++ b/challenge-325/roger-bell-west/python/ch-1.py
@@ -0,0 +1,32 @@
+#! /usr/bin/python3
+
+def consecutiveone(a):
+  h = dict()
+  h[0] = 0
+  latch = 0
+  latched = False
+  for i, n in enumerate(a):
+    if n == 1 and not latched:
+      latched = True
+      latch = i
+    if n == 0 and latched:
+      latched = False
+      h[latch] = i - latch
+  if latched:
+    h[latch] = len(a) - latch
+  return max(h.values())
+
+import unittest
+
+class TestConsecutiveone(unittest.TestCase):
+
+  def test_ex1(self):
+    self.assertEqual(consecutiveone([0, 1, 1, 0, 1, 1, 1]), 3, 'example 1')
+
+  def test_ex2(self):
+    self.assertEqual(consecutiveone([0, 0, 0, 0]), 0, 'example 2')
+
+  def test_ex3(self):
+    self.assertEqual(consecutiveone([1, 0, 1, 0, 1, 1]), 2, 'example 3')
+
+unittest.main()