Day7

2022-10-08 01:07:50 +03:00
parent 5cae083979
commit c019e8856c
13 changed files with 271 additions and 7 deletions
--- a/Cycle/Solution.cs
+++ b/Cycle/Solution.cs
@@ -0,0 +1,23 @@
+namespace _141._Linked_List_Cycle;
+
+public class Solution
+{
+    public bool HasCycle(ListNode head)
+    {
+        if (head == null)
+            return false;
+        ListNode? cur = head;
+        int bit = 1 << 28;
+        int curAbs = 0;
+        while (cur != null && (curAbs & bit) == 0)
+        {
+            cur.val ^= bit;
+            cur = cur.next;
+            if (cur != null)
+                curAbs = cur.val < 0 ? (cur.val * -1) : cur.val;
+        }
+        if ((curAbs & bit) != 0)
+            return true;
+        return false;
+    }
+}