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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/lists/palindrome_1
Exported all problems from the SQLite database into the new directory structure.
Diffstat (limited to 'prolog/problems/lists/palindrome_1')
-rw-r--r--prolog/problems/lists/palindrome_1/common.py17
-rw-r--r--prolog/problems/lists/palindrome_1/en.py14
2 files changed, 31 insertions, 0 deletions
diff --git a/prolog/problems/lists/palindrome_1/common.py b/prolog/problems/lists/palindrome_1/common.py
new file mode 100644
index 0000000..8929fd9
--- /dev/null
+++ b/prolog/problems/lists/palindrome_1/common.py
@@ -0,0 +1,17 @@
+id = 112
+group = 'lists'
+number = 19
+visible = True
+facts = None
+
+solution = '''\
+conc112([], L, L).
+conc112([H|T], L2, [H|L]) :-
+ conc112(T, L2, L).
+rev112([], []).
+rev112([H|T], R):-
+ rev112(T, R1),
+ conc112(R1, [H], R).
+palindrome(L) :-
+ rev112(L, L).
+'''
diff --git a/prolog/problems/lists/palindrome_1/en.py b/prolog/problems/lists/palindrome_1/en.py
new file mode 100644
index 0000000..c1b8971
--- /dev/null
+++ b/prolog/problems/lists/palindrome_1/en.py
@@ -0,0 +1,14 @@
+id = 112
+name = 'palindrome/1'
+slug = 'check if list is a palindrome'
+
+description = '''\
+<p><code>palindrome(L)</code>: the elements of list <code>L</code> are the same when read from the front or back of the list.</p>
+<pre>
+ ?- palindrome([1,2,3,2,1]).
+ true.
+ ?- palindrome([1,2,3]).
+ false.
+</pre>'''
+
+hint = {}