From 3233d9e1eff6c300d2c059a7ad3fb9fbe7676131 Mon Sep 17 00:00:00 2001
From: Rain120 <1085131904@qq.com>
Date: Mon, 31 Jan 2022 17:07:04 +0800
Subject: [PATCH] Update 5.mergeSort.md

---
 5.mergeSort.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/5.mergeSort.md b/5.mergeSort.md
index c030d8f..38c43b1 100644
--- a/5.mergeSort.md
+++ b/5.mergeSort.md
@@ -50,7 +50,7 @@ function mergeSort(arr) {  // 采用自上而下的递归方法
     return merge(mergeSort(left), mergeSort(right));
 }
 
-function merge(left, right)
+function merge(left = [], right = [])
 {
     var result = [];