题解 | #牛群排列去重#
牛群排列去重
https://www.nowcoder.com/practice/8cabda340ac6461984ef9a1ad66915e4
/** * 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 head ListNode类 * @return ListNode类 */ struct ListNode* deleteDuplicates(struct ListNode* head ) { // write code here if(!head) { return NULL; } struct ListNode * px = head; while(px->next) { if(px->val == px->next->val) { struct ListNode * temp = px->next; px ->next = temp->next; free(temp); } else { px = px->next; } } return head; }