From 95e2fe57f6e4639f6ae9f1fef368829d5090dbf6 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ale=C5=A1=20Smodi=C5=A1?= Date: Tue, 18 Aug 2015 16:06:19 +0200 Subject: Exported all problems from the SQLite database into the new directory structure. --- prolog/problems/lists/del_3/common.py | 11 +++++++++++ prolog/problems/lists/del_3/en.py | 19 +++++++++++++++++++ 2 files changed, 30 insertions(+) create mode 100644 prolog/problems/lists/del_3/common.py create mode 100644 prolog/problems/lists/del_3/en.py (limited to 'prolog/problems/lists/del_3') diff --git a/prolog/problems/lists/del_3/common.py b/prolog/problems/lists/del_3/common.py new file mode 100644 index 0000000..1e99959 --- /dev/null +++ b/prolog/problems/lists/del_3/common.py @@ -0,0 +1,11 @@ +id = 105 +group = 'lists' +number = 11 +visible = True +facts = None + +solution = '''\ +del(X, [X|T], T). +del(X, [Y|T], [Y|L]) :- + del(X, T, L). +''' diff --git a/prolog/problems/lists/del_3/en.py b/prolog/problems/lists/del_3/en.py new file mode 100644 index 0000000..a0f0cd3 --- /dev/null +++ b/prolog/problems/lists/del_3/en.py @@ -0,0 +1,19 @@ +id = 105 +name = 'del/3' +slug = 'delete an element from list' + +description = '''\ +

del(X, L1, L2): the list L2 is obtained from L1 by deleting element X.

+
+  ?- del(1, [1,2,3], L).
+    L = [2,3].
+  ?- del(2, [1,2,3,2,5], L).
+    L = [1,3,2,5] ;
+    L = [1,2,3,5].
+  ?- del(X, [1,2,3], L).
+    X = 1, L = [2,3] ;
+    X = 2, L = [1,3] ;
+    X = 3, L = [1,2].
+
''' + +hint = {} -- cgit v1.2.1