From 95e2fe57f6e4639f6ae9f1fef368829d5090dbf6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ale=C5=A1=20Smodi=C5=A1?= <aless@guru.si>
Date: Tue, 18 Aug 2015 16:06:19 +0200
Subject: Exported all problems from the SQLite database into the new directory
 structure.

---
 prolog/problems/trees/mirrorbt_2/common.py | 12 ++++++++++++
 prolog/problems/trees/mirrorbt_2/en.py     | 12 ++++++++++++
 2 files changed, 24 insertions(+)
 create mode 100644 prolog/problems/trees/mirrorbt_2/common.py
 create mode 100644 prolog/problems/trees/mirrorbt_2/en.py

(limited to 'prolog/problems/trees/mirrorbt_2')

diff --git a/prolog/problems/trees/mirrorbt_2/common.py b/prolog/problems/trees/mirrorbt_2/common.py
new file mode 100644
index 0000000..dc8d337
--- /dev/null
+++ b/prolog/problems/trees/mirrorbt_2/common.py
@@ -0,0 +1,12 @@
+id = 136
+group = 'trees'
+number = 43
+visible = True
+facts = None
+
+solution = '''\
+mirrorBT(nil, nil).
+mirrorBT(b(L, X, R), b(NewR, X, NewL)) :-
+  mirrorBT(L, NewL),
+  mirrorBT(R, NewR).
+'''
diff --git a/prolog/problems/trees/mirrorbt_2/en.py b/prolog/problems/trees/mirrorbt_2/en.py
new file mode 100644
index 0000000..d44f463
--- /dev/null
+++ b/prolog/problems/trees/mirrorbt_2/en.py
@@ -0,0 +1,12 @@
+id = 136
+name = 'mirrorBT/2'
+slug = 'flip a binary tree horizontally'
+
+description = '''\
+<p><code>mirrorBT(T, NewT)</code>: the binary tree <code>NewT</code> is obtained from <code>T</code> by flipping it over the vertical axis through the root node.</p>
+<pre>
+  ?- mirrorBT(b(b(b(nil,4,nil),2,b(nil,5,nil)),1,b(nil,3,nil)), X).
+    X = b(b(nil,3,nil), 1, b(b(nil,5,nil), 2, b(nil,4,nil))).
+</pre>'''
+
+hint = {}
-- 
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