Merge pull request #4052 from Firedrake/rogerbw-challenge-112

Solutions for challenge #112

2 files changed, 57 insertions, 0 deletions

diff --git a/challenge-112/roger-bell-west/python/ch-1.py b/challenge-112/roger-bell-west/python/ch-1.py
new file mode 100755
index 0000000000..cf1ecbd798
--- /dev/null
+++ b/challenge-112/roger-bell-west/python/ch-1.py
@@ -0,0 +1,31 @@
+#! /usr/bin/python3
+
+import unittest
+
+def cp(i):
+  p=[x for x in i.split('/') if x != '' and x != '.']
+  d=True
+  while d:
+    d=False
+    for pi in range(1,len(p)):
+      if p[pi] == '..':
+        p=p[0:pi-2]+p[pi+1:-1]
+        d=True
+        break
+  return '/'+'/'.join(p)
+
+class TestCp(unittest.TestCase):
+
+        def test_ex1(self):
+          self.assertEqual(cp('/a/'),'/a','example 1')
+          
+        def test_ex2(self):
+          self.assertEqual(cp('/a/b//c/'),'/a/b/c','example 2')
+          
+        def test_ex3(self):
+          self.assertEqual(cp('/a/b/c/../..'),'/a','example 3')
+          
+        def test_ex4(self):
+          self.assertEqual(cp('/a/./b'),'/a/b','example 4')
+
+unittest.main()
diff --git a/challenge-112/roger-bell-west/python/ch-2.py b/challenge-112/roger-bell-west/python/ch-2.py
new file mode 100755
index 0000000000..77dcdbca19
--- /dev/null
+++ b/challenge-112/roger-bell-west/python/ch-2.py
@@ -0,0 +1,26 @@
+#! /usr/bin/python3
+
+import unittest
+
+def cs(i):
+  a=0
+  b=1
+  c=0
+  for x in range(i):
+    c=a+b
+    a=b
+    b=c
+  return c
+
+class TestCs(unittest.TestCase):
+
+        def test_ex1(self):
+          self.assertEqual(cs(3),3,'example 1')
+          
+        def test_ex2(self):
+          self.assertEqual(cs(4),5,'example 2')
+          
+        def test_ex3(self):
+          self.assertEqual(cs(20),10946,'example 3')
+
+unittest.main()