add Nov 22nd notes and scriptsHEADmaster

1 files changed, 30 insertions, 0 deletions

diff --git a/test_20121121/helpers.py b/test_20121121/helpers.py
new file mode 100644
index 0000000..abe991a
--- /dev/null
+++ b/test_20121121/helpers.py
@@ -0,0 +1,30 @@
+
+def stats(s):
+    high = s.count('#')
+    low = s.count('.')
+    print "total: %d" % (high + low)
+    print "percent: %f" % (100.0 * (high / (high + low * 1.0)))
+
+# total: 3499
+# percent: 46.156045
+
+def hex_stats(s):
+    d = dict()
+    for k in "0123456789ABCDEF":
+        d[k] = s.count(k)*1.0
+    bitmap = dict()
+    for k in d.keys():
+        bitmap[k] = bin(int("0x"+k, 16))[2:].count('1')
+    chars = sum(d.values())
+    bits = chars*4
+    zeros = 0
+    ones = 0
+    print "chars: %d" % chars
+    for k in "0123456789ABCDEF":
+        v = d[k]
+        print "\t%s: %d\t%f\t%f" % (k, v, v/chars, v/chars*16)
+        ones += bitmap[k] * v
+        zeros += (4 - bitmap[k]) * v
+    print "bits: %d" % bits
+    print "\tzeros: %d\t%f" % (zeros, zeros/bits)
+    print "\tones: %d\t%f" % (ones, ones/bits)