Merge pull request #7279 from Firedrake/rogerbw-challenge-196

Solutions for challenge #196

2 files changed, 64 insertions, 0 deletions

diff --git a/challenge-196/roger-bell-west/python/ch-1.py b/challenge-196/roger-bell-west/python/ch-1.py
new file mode 100755
index 0000000000..8cdc462919
--- /dev/null
+++ b/challenge-196/roger-bell-west/python/ch-1.py
@@ -0,0 +1,34 @@
+#! /usr/bin/python3
+
+import unittest
+
+def pattern132(l):
+  o = []
+  for a in range(0, len(l) - 2):
+    for b in range(a + 1, len(l) - 1):
+      if l[a] < l[b]:
+        for c in range(b + 1, len(l)):
+          if l[b] > l[c] and l[a] < l[c]:
+            o = [l[a], l[b], l[c]]
+            break
+      if len(o) > 0:
+        break
+    if len(o) > 0:
+      break
+  return o
+
+class TestPattern132(unittest.TestCase):
+
+  def test_ex1(self):
+    self.assertEqual(pattern132([3, 1, 4, 2]), [1, 4, 2], 'example 1')
+
+  def test_ex2(self):
+    self.assertEqual(pattern132([1, 2, 3, 4]), [], 'example 2')
+
+  def test_ex3(self):
+    self.assertEqual(pattern132([1, 3, 2, 4, 6, 5]), [1, 3, 2], 'example 3')
+
+  def test_ex4(self):
+    self.assertEqual(pattern132([1, 3, 4, 2]), [1, 3, 2], 'example 4')
+
+unittest.main()
diff --git a/challenge-196/roger-bell-west/python/ch-2.py b/challenge-196/roger-bell-west/python/ch-2.py
new file mode 100755
index 0000000000..caece39ab6
--- /dev/null
+++ b/challenge-196/roger-bell-west/python/ch-2.py
@@ -0,0 +1,30 @@
+#! /usr/bin/python3
+
+import unittest
+
+def rangelist(l):
+  o = []
+  start = l[0]
+  prev = start
+  for v in l[1:]:
+    if v != prev + 1:
+      if prev > start:
+        o.append([start, prev])
+      start = v
+    prev = v
+  if prev > start:
+    o.append([start, prev])
+  return o
+
+class TestRangelist(unittest.TestCase):
+
+  def test_ex1(self):
+    self.assertEqual(rangelist([1, 3, 4, 5, 7]), [[3, 5]], 'example 1')
+
+  def test_ex2(self):
+    self.assertEqual(rangelist([1, 2, 3, 6, 7, 9]), [[1, 3], [6, 7]], 'example 2')
+
+  def test_ex3(self):
+    self.assertEqual(rangelist([0, 1, 2, 4, 5, 6, 8, 9]), [[0, 2], [4, 6], [8, 9]], 'example 3')
+
+unittest.main()