题解 | #链表中倒数最后k个结点#
链表中倒数最后k个结点
https://www.nowcoder.com/practice/886370fe658f41b498d40fb34ae76ff9
/** * struct ListNode { * int val; * struct ListNode *next; * }; */ /** * 代码中的类名、方法名、参数名已经指定,请勿修改,直接返回方法规定的值即可 * * * @param pHead ListNode类 * @param k int整型 * @return ListNode类 */ struct ListNode* FindKthToTail(struct ListNode* pHead, int k ) { // write code here int i = 0, j = 0; struct ListNode* pNodetemp = pHead; while (NULL != pNodetemp) { i++; pNodetemp = pNodetemp->next; } if (i < k) { return NULL; } pNodetemp = pHead; for (j = 0; j < i - k; j++) { pNodetemp = pNodetemp->next; } //////////////////////////////// for the debug test print while (NULL != pHead) { printf("val = %d\r\n", pHead->val); pHead = pHead->next; } //////////////////////////////// return pNodetemp; }