2 files changed, 37 insertions, 0 deletions
diff --git a/challenge-090/roger-bell-west/python/ch-1.py b/challenge-090/roger-bell-west/python/ch-1.py
new file mode 100755
index 0000000000..64ac9905d0
--- /dev/null
+++ b/challenge-090/roger-bell-west/python/ch-1.py
@@ -0,0 +1,15 @@
+#! /usr/bin/python3
+
+def gs(bs):
+    l={'A': 'T','T': 'A','C': 'G','G': 'C'}
+    os=''.join(l[i] for i in bs)
+    return [len(os),os]
+
+import unittest
+
+class TestGs(unittest.TestCase):
+
+    def test_ex1(self):
+        self.assertEqual(gs('GTAAACCCCTTTTCATTTAGACAGATCGACTCCTTATCCATTCTCAGAGATGTGTTGCTGGTCGCCG'),[67,'CATTTGGGGAAAAGTAAATCTGTCTAGCTGAGGAATAGGTAAGAGTCTCTACACAACGACCAGCGGC'],'example 1')
+
+unittest.main()
diff --git a/challenge-090/roger-bell-west/python/ch-2.py b/challenge-090/roger-bell-west/python/ch-2.py
new file mode 100755
index 0000000000..e63182aa61
--- /dev/null
+++ b/challenge-090/roger-bell-west/python/ch-2.py
@@ -0,0 +1,22 @@
+#! /usr/bin/python3
+ 
+def em(aa,bb):
+    a=aa
+    b=bb
+    s=0
+    demo=list()
+    while (a > 0):
+        line=' '.join([format(a,'5d'),format(b,'5d')])
+        if (a & 1 == 1):
+            s += b
+            line=' '.join([line,'->',format(b,'5d')])
+        a = a >> 1
+        b = b << 1
+        demo.append(line)
+    demo.append('               -----')
+    demo.append('               ' + format(s,'5d'))
+    for i in demo:
+        print(i)
+    return s
+
+em(13,238)