LeetCode 70. Remove Duplicates from Sorted List 刪除排序連結串列中的重複元素
class Solution {
public:
ListNode* deleteDuplicates(ListNode* head) {
if(head==nullptr)
return nullptr;
ListNode *p=head,*cur=head->next;
while(cur)
{
if(cur->val==p->val)
{
p->next=cur->next;
free(cur);
}
else
{
p=cur;
}
cur=p->next;
}
return head;
}
};
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