删除排序链表中的重复元素的golang实现

输入: 1->1->2
输出: 1->2
输入: 1->1->2->3->3
输出: 1->2->3

func deleteDuplicates(head *ListNode) *ListNode {
    if head == nil {
        return nil
    }
    curr := head
    for curr.Next != nil {
        if curr.Val == curr.Next.Val {
            curr.Next = curr.Next.Next
        } else {
            curr = curr.Next
        }
    }
    return head
}