sublist exercise

python/sublist/sublist.py

@@ -0,0 +1,35 @@
+"""
+This exercise stub and the test suite contain several enumerated constants.
+
+Since Python 2 does not have the enum module, the idiomatic way to write
+enumerated constants has traditionally been a NAME assigned to an arbitrary,
+but unique value. An integer is traditionally used because it’s memory
+efficient.
+It is a common practice to export both constants and functions that work with
+those constants (ex. the constants in the os, subprocess and re modules).
+
+You can learn more here: https://en.wikipedia.org/wiki/Enumerated_type
+"""
+
+# Possible sublist categories.
+# Change the values as you see fit.
+SUBLIST = 0
+SUPERLIST = 1
+EQUAL = 2
+UNEQUAL = 3
+
+def subfinder(mylist, pattern):
+    matches = []
+    for i, val in enumerate(mylist):
+        if val == pattern[0] and mylist[i:i+len(pattern)] == pattern:
+            matches.append(pattern)
+    return matches
+
+def sublist(one, two):
+    if one == two: return EQUAL
+    if not one or not two: return SUBLIST if not one else SUPERLIST if not two else UNEQUAL    
+    return SUPERLIST if subfinder(one, two) else SUBLIST if subfinder(two, one) else UNEQUAL
+
+x, y = [1, 2, 4], [5, 6, 1, 1, 2, 4, 7, 8]
+print(sublist(x, y))
+print(sublist(y, x))