C solution


  • 0
    B

    bool hasCycle(struct ListNode *head) {
    struct ListNode *fast=head;
    struct ListNode *slow=head;
    while(fast!=NULL&&fast->next!=NULL)
    {
    fast=fast->next->next;
    slow=slow->next;
    if(fast==slow)
    return true;
    }
    return false;
    }


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