From 52a10c0c6195c1bd55bfa86b488a329856b4ca7a Mon Sep 17 00:00:00 2001
From: Ti Gong <ttigong@163.com>
Date: Sun, 7 Jul 2019 20:11:05 +0800
Subject: [PATCH] fix a bug in linked_list.py

---
 "docs/03_\351\223\276\350\241\250/linked_list.py" | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git "a/docs/03_\351\223\276\350\241\250/linked_list.py" "b/docs/03_\351\223\276\350\241\250/linked_list.py"
index cb5608b..bf46571 100644
--- "a/docs/03_\351\223\276\350\241\250/linked_list.py"
+++ "b/docs/03_\351\223\276\350\241\250/linked_list.py"
@@ -77,7 +77,10 @@ def remove(self, value):    # O(n)
             if curnode.value == value:
                 prevnode.next = curnode.next
                 if curnode is self.tailnode:  # NOTE: 注意更新 tailnode
-                    self.tailnode = prevnode
+                    if prevnode is self.root:
+                        self.tailnode = None
+                    else:
+                        self.tailnode = prevnode
                 del curnode
                 self.length -= 1
                 return 1  # 表明删除成功