From c388b14c3f5f2439643d20a73229bf84d378567c Mon Sep 17 00:00:00 2001
From: Electrominch <64524860+Electrominch@users.noreply.github.com>
Date: Thu, 6 Oct 2022 03:12:43 +0300
Subject: [PATCH] Fix 142

---
 142. Linked List Cycle II/Solution.cs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/142. Linked List Cycle II/Solution.cs b/142. Linked List Cycle II/Solution.cs
index d7f9698..f973b8d 100644
--- a/142. Linked List Cycle II/Solution.cs	
+++ b/142. Linked List Cycle II/Solution.cs	
@@ -4,6 +4,8 @@ public class Solution
 {
     public ListNode? DetectCycle(ListNode head)
     {
+        if(head == null)
+            return null;
         ListNode? cur = head;
         int bit = 1 << 28;
         int curAbs = 0;