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-rw-r--r--src/treap.erl6
1 files changed, 4 insertions, 2 deletions
diff --git a/src/treap.erl b/src/treap.erl
index 360f543de..42438f228 100644
--- a/src/treap.erl
+++ b/src/treap.erl
@@ -44,7 +44,7 @@ insert(Key, Priority, Value, Tree) ->
insert1(nil, HashKey, Priority, Value) ->
{HashKey, Priority, Value, nil, nil};
-insert1({HashKey1, Priority1, Value1, Left, Right},
+insert1({HashKey1, Priority1, Value1, Left, Right} = Tree,
HashKey, Priority, Value) ->
if
HashKey < HashKey1 ->
@@ -55,8 +55,10 @@ insert1({HashKey1, Priority1, Value1, Left, Right},
heapify({HashKey1, Priority1, Value1,
Left,
insert1(Right, HashKey, Priority, Value)});
+ Priority == Priority1 ->
+ {HashKey, Priority, Value, Left, Right};
true ->
- erlang:error(key_exists)
+ insert1(delete_root(Tree), HashKey, Priority, Value)
end.
heapify(nil) ->