Merge pull request #2943 from Firedrake/rogerbw-challenge-090

Solutions for challenge #90.

1 files changed, 22 insertions, 0 deletions

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)