From 8068c426885aa013c0a97a03c6c15a1c1d5e6c2b Mon Sep 17 00:00:00 2001
From: Hongyun Zhang <67003874+hongyun-robot@users.noreply.github.com>
Date: Fri, 21 Jul 2023 14:47:37 +0800
Subject: [PATCH] fixed error when the list is empty (#637)

* feat: Add Go code to binary search recursion under divide and conquer

* style: Code comment standardization

* style: modify function comment

* fix: fixed error when the list is empty

* Update print_utils.go

* Delete print_utils_test.go

---------

Co-authored-by: Yudong Jin <krahets@163.com>
---
 codes/go/pkg/print_utils.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/codes/go/pkg/print_utils.go b/codes/go/pkg/print_utils.go
index d65ebba1d..0e85a189f 100644
--- a/codes/go/pkg/print_utils.go
+++ b/codes/go/pkg/print_utils.go
@@ -19,6 +19,10 @@ func PrintSlice[T any](nums []T) {
 
 // PrintList Print a list
 func PrintList(list *list.List) {
+	if list.Len() == 0 {
+		fmt.Print("[]\n")
+		return
+	}
 	e := list.Front()
 	// 强转为 string, 会影响效率
 	fmt.Print("[")