数据结构57-双向链表转成字符串代码 

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>双向链表</title>
</head>
<body>
    <script>
        function DoubleList(){
            this.head=null
            this.tail=null
            this.length=0

            function Node(data){
                this.data=data
                this.prev=null
                this.next=null
            }
            
            DoubleList.prototype.append=function(data){
                var newNode=new Node(data)
                if(this.length==0){
                    
                    this.head=newNode
                }else{
                    
                    var current=this.head
                    while(current.next){
                        current=current.next
                    }
                    current.next=newNode
                }
                this.length+=1
            }

            DoubleList.prototype.backwardString=function(data){
                //定义变量
                var current=this.head
                var resultString=""
                while(current){
                    resultString+=current.data+" "
                    current=current.next
                }
                return resultString
            }

            DoubleList.prototype.forwardString=function(data){
                //定义变量
                var current=this.tail
                var resultString=""
                while(current){
                    resultString+=current.data+" "
                    current=current.prev
                }
                return resultString
            }

            DoubleList.prototype.toString=function(data){
                //定义变量
               return this.backwardString()
            }

        }
    </script>
</body>
</html>

posted @ 2022-12-13 15:08  前端导师歌谣  阅读(22)  评论(0)    收藏  举报