Specific implementation example of js one-way linked list_javascript skills

Copy code The code is as follows:

function linkNode(_key, _value)
{
///

/// Node class of linked list class
///

this.Key = _key;
this.Value = _value;
this.next = null;
}
function Link()
{
/// /// Create a linked list class
///
this.root = new linkNode(null, null); //root is always an empty node
this.end = this.root;
}
Link.prototype =
{
count: 0,
value: function (_key)
{
///

                                                                                    . // The value of key
                                                                                                                                                                                                                                                           ;/returns>
var i = this.root;
while (Boolean(i = i.next))
{
if (i.Key == _key)
return i. Value;
}
},
add: function (_key, _value)
{
///

/// Add a node to the end of the linked list
///

param>
///
/// The value of value
///
/// < ;returns type = "Object"> i = i.next))
                                                                                                                                                                                                                                                                                            value) ;
if (this.count == 0)
this.root.next = node;
else
this.end.next = node;
this.end = node;
this.count ;
return _value;
},
    insert: function (_key, node)
    {
        ///

        /// 从链表类的某节点之后插入新节点node.
        ///

        ///
        /// 在键值等于_key的元素之后插入
        ///
        ///
        /// 要插入的元素
        ///
        var i = this.root;
        while (Boolean(i = i.next))
        {
            if (i.Key == _key)
            {
                var tmp = i.next;
                i.next = node;
                node.next = tmp;
                break;
            }
        }
    },
    insertBefore: function (_key, node)
    {
        ///

        /// 从链表类的某节点之后插入新节点node.
        ///

        ///
        /// 在键值等于_key的元素之后插入
        ///
        ///
        /// 要插入的元素 www.jb51.net
        ///
        var i = this.root;
        while (Boolean(i = i.next))
        {
            if (i.next.Key == _key)
            {
                var tmp = i.next;
                i.next = node;
                node.next = tmp;
                break;
            }
        }
    },
    remove: function (_key)
    {
        ///

        /// 从链表类中移除一个key
        ///

        ///
        /// key的值
        ///
        var i = this.root;
        do
        {
            if (i.next.Key == _key)
            {
                if (i.next.next == null)
                    this.end = i;
                i.next = i.next.next;

this.count--;
return;
}
} while (Boolean(i = i.next))
},
exists: function (_ key)
{
///

/// Check whether there is a key
in the linked list class type="String">
/// The value of key
/// ;/returns>
var i = this.root;
while (Boolean(i = i.next))
if (i.Key == _key)
return true;
return false;
},
removeAll: function ()
{
🎜> this.root = new linkNode(null, null);
this.end = this.root;
this.count = 0;
},
Obj2str: function (o)
{
if (o == undefined)
{
return "";
}
var r = [];
if (typeof o == "string")
              return """ o.replace(/(["\])/g, "\$1").replace(/(n)/g, "\n").replace(/(r)/g, "\r").replace(/(t)/g, "\t") """;
                                                                                                   )
                                                                                                     ​"{" r .join () "}"; r.push(this.Obj2str( o[i]))
                                                                                                                                                                                            ":/g, '":""');
},
    getJSON: function ()
    {
        ///

        /// 转换成JSON字符串
        ///

        ///
        ///
        //内部方法，用于递归
        var me = this;
        var getChild = function (node)
        {
            var str = "";
            str += "{\"Key\":\"" + node.Key + "\",\"Value\":" + me.Obj2str(node.Value);
            if (node.next != null)
                str += ",\"next\":" + getChild(node.next);
            else
                str += ",\"next\":\"null\"";
            str += "}";
            return str;
        };
        var link = "{\"root\":{\"Key\":\"null\",\"Value\":\"null\",\"next\":";
        if (this.count == 0)//如果空表
        {
            return "{\"root\":{\"Key\":\"null\",\"Value\":\"null\",\"next\":\"null\"},\"end\":{\"Key\":\"null\",\"Value\":\"null\",\"next\":\"null\"},\"count\":\"0\"}";
        }
        link += getChild(this.root.next) + "}";
        //加上end
        link += ",\"end\":{\"Key\":\"" + this.end.Key + "\",\"Value\":" + me.Obj2str(this.end.Value) + ",\"next\":\"null\"";
        link += "},\"count\":\"" + this.count + "\"}";
        return link;
    },
    getArrayJSON: function ()
    {
        ///

        /// 转所有节点的value换成JSON字符串,数组格式
        ///

        ///
        ///
        var link = "{\"link\":[";
        var i = this.root;
        while (Boolean(i = i.next))
        {
            link += this.Obj2str(i.Value) + ",";
        }
        link = link.substr(0, link.length - 1);
        link += "]}";
        return link;
    },
    sort: function (fn)
    {
        ///

        /// 对链表进行排序
        ///

        ///
        /// 比较两个链表元素大小的方法，当返回真时，此方法的参数所指的节点将往下沉
        ///
        if (fn != null)
        {

            var i = this.root;
            while (Boolean(i = i.next))
            {
                var j = this.root;
                while (Boolean(j = j.next))
                {
                    if (j.next != null)
                    {
                        if (fn.call(this, j))
                        {
                            var Key = j.Key;
                            var Value = j.Value;
                            j.Key = j.next.Key;
                            j.Value = j.next.Value;
                            j.next.Key = Key;
                            j.next.Value = Value;
                        }
                    }
                }
                this.end = i;
            }

        }
        else
        {

        }
    }
};