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Create 141.cpp

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Kirigaya Kazuto 2018-08-13 22:33:47 +08:00 committed by GitHub
parent 4181bb0828
commit e866e14b86
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LeetCode-CN/141.cpp Normal file
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class Solution {
public:
bool hasCycle(ListNode *head) {
if (head == nullptr || head->next == nullptr) return false;
ListNode* p = head;
ListNode* q = head->next->next;
while (p != q && q && q->next)
{
p = p->next;
q = q->next->next;
}
return (p == q);
}
};