1 files changed, 36 insertions, 0 deletions
diff --git a/challenge-251/roger-bell-west/python/ch-2.py b/challenge-251/roger-bell-west/python/ch-2.py
new file mode 100755
index 0000000000..9de893dc56
--- /dev/null
+++ b/challenge-251/roger-bell-west/python/ch-2.py
@@ -0,0 +1,36 @@
+#! /usr/bin/python3
+
+def luckynumbers(a):
+  maxs = set()
+  for x in range(len(a[0])):
+    max = (0, 0, 0)
+    for y in range(len(a)):
+      if a[y][x] > max[0]:
+        max = (a[y][x], y, x)
+    maxs.add(max)
+  mins = set()
+  for y in range(len(a)):
+    min = (a[y][0], y, 0)
+    for x in range(len(a[0])):
+      if a[y][x] < min[0]:
+        min = (a[y][x], y, x)
+    mins.add(min)
+  i = list(maxs.intersection(mins))
+  if len(i) > 0:
+    return i[0][0]
+  return -1
+
+import unittest
+
+class TestLuckynumbers(unittest.TestCase):
+
+  def test_ex1(self):
+    self.assertEqual(luckynumbers([[3, 7, 9], [9, 11, 13], [15, 16, 17]]), 15, 'example 1')
+
+  def test_ex2(self):
+    self.assertEqual(luckynumbers([[1, 10, 4, 2], [9, 3, 8, 7], [15, 16, 17, 12]]), 12, 'example 2')
+
+  def test_ex3(self):
+    self.assertEqual(luckynumbers([[7, 8], [1, 2]]), 7, 'example 3')
+
+unittest.main()