【LeetCode从零单排】No83 Remove Duplicates from Sorted List

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题目

Given a sorted linked list, delete all duplicates such that each element appear only once.

For example,
Given 1->1->2, return 1->2.
Given 1->1->2->3->3, return 1->2->3.

代码

 public static ListNode deleteDuplicates(ListNode head) {        if (head==null || head.next==null) return head;         ListNode first = head;        ListNode second=head.next;        while(second!=null){            if(first.val==second.val){                second=second.next;                first.next=second;            }                        else{              first=first.next;              second=first.next;                        }                    }                return head;    }

代码下载：https://github.com/jimenbian/GarvinLeetCode

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