L83. Remove Duplicates from Sorted List

List

Problem:

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

Example 1:

Input: 1->1->2
Output: 1->2

Example 2:

Input: 1->1->2->3->3
Output: 1->2->3

Solution:

public ListNode deleteDuplicates(ListNode head) {
    ListNode cur = head;
    while(cur != null && cur.next != null){
        if(cur.next.val == cur.val){
            cur.next = cur.next.next;
        }else{
            cur = cur.next;
        }
    }
    return head;
}