82. 删除排序链表中的重复元素 II

package main
type ListNode struct {
    Val int
    Next *ListNode
}
func deleteDuplicates(head *ListNode) *ListNode {
    dummyHead:=&ListNode{
        Val:  -1,
        Next: head,
    }
    pre := dummyHead
    curr := head
    count :=0
    for curr!=nil&&curr.Next!= nil{
        // 有重复一直循环
        for curr.Next!=nil&&curr.Next.Val==curr.Val{
            count ++
            curr = curr.Next
        }
        if count>0 {
            pre.Next= curr.Next
            curr = curr.Next
            count = 0
        }else {
            pre = curr
            curr = curr.Next
        }
    }
    return dummyHead.Next
}
func main() {
}