tasks a-s

Task/Set-consolidation/Python/set-consolidation-1.py

@@ -0,0 +1,42 @@
+def consolidate(sets):
+    '''
+    >>> # Define some variables
+    >>> A,B,C,D,E,F,G,H,I,J,K = 'A,B,C,D,E,F,G,H,I,J,K'.split(',')
+    >>> # Consolidate some lists of sets
+    >>> consolidate([{A,B}, {C,D}])
+    [{'A', 'B'}, {'C', 'D'}]
+    >>> consolidate([{A,B}, {B,D}])
+    [{'A', 'B', 'D'}]
+    >>> consolidate([{A,B}, {C,D}, {D,B}])
+    [{'A', 'C', 'B', 'D'}]
+    >>> consolidate([{H,I,K}, {A,B}, {C,D}, {D,B}, {F,G,H}])
+    [{'A', 'C', 'B', 'D'}, {'G', 'F', 'I', 'H', 'K'}]
+    >>> consolidate([{A,H}, {H,I,K}, {A,B}, {C,D}, {D,B}, {F,G,H}])
+    [{'A', 'C', 'B', 'D', 'G', 'F', 'I', 'H', 'K'}]
+    >>> consolidate([{H,I,K}, {A,B}, {C,D}, {D,B}, {F,G,H}, {A,H}])
+    [{'A', 'C', 'B', 'D', 'G', 'F', 'I', 'H', 'K'}]
+    >>> # Confirm order-independence
+    >>> from copy import deepcopy
+    >>> import itertools
+    >>> sets = [{H,I,K}, {A,B}, {C,D}, {D,B}, {F,G,H}, {A,H}]
+    >>> answer = consolidate(deepcopy(sets))
+    >>> for perm in itertools.permutations(sets):
+            assert consolidate(deepcopy(perm)) == answer
+
+
+    >>> answer
+    [{'A', 'C', 'B', 'D', 'G', 'F', 'I', 'H', 'K'}]
+    >>> len(list(itertools.permutations(sets)))
+    720
+    >>>
+    '''
+    setlist = [s for s in sets if s]
+    for i, s1 in enumerate(setlist):
+        if s1:
+            for s2 in setlist[i+1:]:
+                intersection = s1.intersection(s2)
+                if intersection:
+                    s2.update(s1)
+                    s1.clear()
+                    s1 = s2
+    return [s for s in setlist if s]

Task/Set-consolidation/Python/set-consolidation-2.py

@@ -0,0 +1,8 @@
+def conso(s):
+	if len(s) < 2: return s
+
+	r, b = [s[0]], conso(s[1:])
+	for x in b:
+		if r[0].intersection(x): r[0].update(x)
+		else: r.append(x)
+	return r