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Day4

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This commit is contained in:
Electrominch
2022-10-06 00:46:00 +03:00
parent 062e03bdbf
commit cb2f99c3a8
21 changed files with 434 additions and 4 deletions
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28
142. Linked List Cycle II/Solution.cs Normal file
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@@ -0,0 +1,28 @@
namespace _142._Linked_List_Cycle_II;
public class Solution
{
public ListNode? DetectCycle(ListNode head)
{
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;
}
cur = head;
curAbs = cur.val < 0 ? (cur.val * -1) : cur.val;
while (cur != null && (curAbs & bit) != 0)
{
cur.val ^= bit;
cur = cur.next;
if (cur != null)
curAbs = cur.val < 0 ? (cur.val * -1) : cur.val;
}
return cur;
}
}