Merge pull request #9454 from Firedrake/rogerbw-challenge-253

RogerBW solutions for challenge no. 253

1 files changed, 19 insertions, 0 deletions

diff --git a/challenge-253/roger-bell-west/python/ch-2.py b/challenge-253/roger-bell-west/python/ch-2.py
new file mode 100755
index 0000000000..80fa491683
--- /dev/null
+++ b/challenge-253/roger-bell-west/python/ch-2.py
@@ -0,0 +1,19 @@
+#! /usr/bin/python3
+
+def weakestrows(a):
+  p = list(range(len(a)))
+  b = [sum(n) for n in a]
+  p.sort(key = lambda i: b[i])
+  return p
+
+import unittest
+
+class TestWeakestrows(unittest.TestCase):
+
+  def test_ex1(self):
+    self.assertEqual(weakestrows([[1, 1, 0, 0, 0], [1, 1, 1, 1, 0], [1, 0, 0, 0, 0], [1, 1, 0, 0, 0], [1, 1, 1, 1, 1]]), [2, 0, 3, 1, 4], 'example 1')
+
+  def test_ex2(self):
+    self.assertEqual(weakestrows([[1, 0, 0, 0], [1, 1, 1, 1], [1, 0, 0, 0], [1, 0, 0, 0]]), [0, 2, 3, 1], 'example 2')
+
+unittest.main()