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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 | /* struct ListNode { int val; struct ListNode *next; ListNode(int x) : val(x), next(NULL) { } }; */ class Solution { public : ListNode* FindKthToTail(ListNode* pListHead, unsigned int k) { if (NULL==pListHead ||0==k) return NULL; ListNode * p1=pListHead; ListNode * p2=pListHead; for ( int i=0;i<k-1;i++) { if (NULL==p2->next) return NULL; else p2=p2->next; } while (NULL!=p2->next) { p1=p1->next; p2=p2->next; } return p1; } }; |
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原文地址:http://www.cnblogs.com/zhxshseu/p/5285153.html