Leetcode#19 Remove Nth Node From End of List
基本模拟
代码:
1 ListNode *removeNthFromEnd(ListNode *head, int n) { 2 ListNode *fast = head; 3 ListNode *slow = head; 4 ListNode *prev = NULL; 5 6 while (--n) 7 fast = fast->next; 8 while (fast->next) { 9 fast = fast->next; 10 prev = slow; 11 slow = slow->next; 12 } 13 if (!prev) 14 return head->next; 15 prev->next = slow->next; 16 return head; 17 }