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authorAleš Smodiš <aless@guru.si>2015-08-18 16:06:19 +0200
committerAleš Smodiš <aless@guru.si>2015-08-18 16:06:19 +0200
commit95e2fe57f6e4639f6ae9f1fef368829d5090dbf6 (patch)
tree462ba05eb0c4732ca1c97739548801258bf47b40 /prolog/problems/sets/subset_2
Exported all problems from the SQLite database into the new directory structure.
Diffstat (limited to 'prolog/problems/sets/subset_2')
-rw-r--r--prolog/problems/sets/subset_2/common.py13
-rw-r--r--prolog/problems/sets/subset_2/en.py19
2 files changed, 32 insertions, 0 deletions
diff --git a/prolog/problems/sets/subset_2/common.py b/prolog/problems/sets/subset_2/common.py
new file mode 100644
index 0000000..7fbbf49
--- /dev/null
+++ b/prolog/problems/sets/subset_2/common.py
@@ -0,0 +1,13 @@
+id = 133
+group = 'sets'
+number = 40
+visible = True
+facts = None
+
+solution = '''\
+subset([], []).
+subset([H|T], [H|T1]) :-
+ subset(T, T1).
+subset([_|T], T1) :-
+ subset(T, T1).
+'''
diff --git a/prolog/problems/sets/subset_2/en.py b/prolog/problems/sets/subset_2/en.py
new file mode 100644
index 0000000..9d9132b
--- /dev/null
+++ b/prolog/problems/sets/subset_2/en.py
@@ -0,0 +1,19 @@
+id = 133
+name = 'subset/2'
+slug = 'generate all subsets of a set'
+
+description = '''\
+<p><code>subset(Set, Subset)</code>: the set <code>Subset</code> is a subset of <code>Set</code>. This predicate should generate all valid solutions, one by one.</p>
+<pre>
+ ?- subset([1,2,3], SS).
+ SS = [1,2,3] ;
+ SS = [1,2] ;
+ SS = [1,3] ;
+ SS = [1] ;
+ SS = [2,3] ;
+ SS = [2] ;
+ SS = [3] ;
+ SS = [].
+</pre>'''
+
+hint = {}