From 6917b61c586adc2b19b044d2057a75a04a18362b Mon Sep 17 00:00:00 2001
From: QuinnDK <39618652+QuinnDK@users.noreply.github.com>
Date: Mon, 17 May 2021 15:50:36 +0800
Subject: [PATCH] =?UTF-8?q?Update=200142.=E7=8E=AF=E5=BD=A2=E9=93=BE?=
 =?UTF-8?q?=E8=A1=A8II.md?=
MIME-Version: 1.0
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---
 problems/0142.环形链表II.md | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/problems/0142.环形链表II.md b/problems/0142.环形链表II.md
index 7556b854..b3a53c07 100644
--- a/problems/0142.环形链表II.md
+++ b/problems/0142.环形链表II.md
@@ -234,6 +234,29 @@ class Solution:
 ```
 
 Go：
+```func detectCycle(head *ListNode) *ListNode {
+    if head ==nil{
+        return head 
+    }
+    slow:=head
+    fast:=head.Next
+
+    for fast!=nil&&fast.Next!=nil{
+        if fast==slow{
+            slow=head
+            fast=fast.Next
+            for fast!=slow {
+                fast=fast.Next
+                slow=slow.Next
+            }
+            return slow
+        }
+        fast=fast.Next.Next
+        slow=slow.Next
+    }
+    return nil
+}
+```
 
 
 -----------------------