A-M baby

Task/Hamming-numbers/Python/hamming-numbers-2.py

@@ -0,0 +1,25 @@
+import psyco
+
+def hamming(limit):
+    h = [1] * limit
+    x2, x3, x5 = 2, 3, 5
+    i = j = k = 0
+
+    for n in xrange(1, limit):
+        h[n] = min(x2, x3, x5)
+        if x2 == h[n]:
+            i += 1
+            x2 = 2 * h[i]
+        if x3 == h[n]:
+            j += 1
+            x3 = 3 * h[j]
+        if x5 == h[n]:
+            k += 1
+            x5 = 5 * h[k]
+
+    return h[-1]
+
+psyco.bind(hamming)
+print [hamming(i) for i in xrange(1, 21)]
+print hamming(1691)
+print hamming(1000000)