From b496b95e92b0d366a58cf8fb0fa04a91629b8b69 Mon Sep 17 00:00:00 2001
From: SuperMario <455080311@qq.com>
Date: Fri, 6 Mar 2020 14:50:01 +0800
Subject: [PATCH] Update ValidateBinarySearchTree.swift

---
 Tree/ValidateBinarySearchTree.swift | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Tree/ValidateBinarySearchTree.swift b/Tree/ValidateBinarySearchTree.swift
index dd9afe06..1d9f5928 100644
--- a/Tree/ValidateBinarySearchTree.swift
+++ b/Tree/ValidateBinarySearchTree.swift
@@ -17,7 +17,7 @@
  */
 
 class ValidateBinarySearchTree {
-    func isValidBST(root: TreeNode?) -> Bool {
+    func isValidBST(_ root: TreeNode?) -> Bool {
         return _helper(root, nil, nil)
     }