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Remove Duplicates from Sorted List
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.
1 /** 2 * Definition for singly-linked list. 3 * public class ListNode { 4 * int val; 5 * ListNode next; 6 * ListNode(int x) { 7 * val = x; 8 * next = null; 9 * }10 * }11 */12 public class Solution {13 public ListNode deleteDuplicates(ListNode head) {14 ListNode header = new ListNode(Integer.MAX_VALUE);15 header.next = head;16 ListNode cur = header, pre = header.next;17 while(pre != null){18 if(pre.val != cur.val){19 cur.next = pre;20 pre = pre.next;21 cur = cur.next;22 cur.next = null;23 }else24 pre = pre.next;25 }26 return header.next;27 }28 }
Remove Duplicates from Sorted List
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