题解 | #删除有序链表中重复的元素-I#

function deleteDuplicates( head ) {
        if(!head) return head
        let cur = head
        while(cur.next){
            if(cur.val === cur.next.val){
                cur.next = cur.next.next
            }else{
                cur = cur.next
            }
        }
        return head
    }