[leetcode]Remove Duplicates from Sorted List
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/*
q一直指向p的前一个结点,p是要处理的结点。链表已经经过了排序
*/
public class Solution {
public ListNode deleteDuplicates(ListNode head) {if(head==null||head.next==null)
return head;
ListNode p=head.next,q=head;
while(p!=null){
if(q.val==p.val){
q.next=p.next;
p=p.next;
}else{
q=p;
p=p.next;
}
}
return head;
}
}
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