数据结构48-链表remove方法实现

2023-02-11 87

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简介： 数据结构48-链表remove方法实现

<!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>链表操作</title>
  </head>
  <body>
    <script>
      function LinkList() {
        function Node(data) {
          this.data = data;
          this.next = null;
        }
        //属性
        this.head = null;
        this.length = 0;
        LinkList.prototype.append = function (data) {
          //创建新的节点
          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;
        };
        //toString()
        LinkList.prototype.toString = function () {
          //定义变量
          var current = this.head;
          //
          var listString = "";
          while (current) {
            listString += current.data + " ";
            current = current.next;
          }
          return listString;
        };
        //insert方法
        LinkList.prototype.toString = function (position, data) {
          if (position < 0 || position > this.length) return false;
          //根据data创建节点
          var newNode = new Node(data);
          //
          if (position == 0) {
            newNode.next = this.head;
            this.head = newNode;
          } else {
            var index = 0;
            var current = head;
            var previous = null;
            while (index++ < position) {
              previous = current;
              current = current.next;
            }
            newNode.next = current;
            previous.next = newNode;
          }
          this.length++;
          return true;
        };
        //获取详情方法
        LinkList.prototype.get = function (position) {
          if (position < 0 || position >= this.length) return null;
          //获取对应的data
          var current = this.head;
          var index = 0;
          while (index < position) {
            current = current.next;
          }
          return current.data;
        };
        LinkList.prototype.get = function (data) {
          var current = this.head;
          var index = 0;
          //开始查找
          while (current) {
            if (current.data == data) {
              return index;
            }
            current = current.next;
            index += 1;
          }
          return -1;
        };
        //update方法
        //获取详情方法
        LinkList.prototype.update = function (position, newData) {
          if (position < 0 || position >= this.length) return false;
          //获取对应的data
          var current = this.head;
          var index = 0;
          while (index++ < position) {
            current = current.next;
          }
          //将数据替换
          current.data = newData;
          return true;
        };
        //从列表的特定位置删除1项
        LinkList.prototype.removeAt = function (position) {
          if (position < 0 || position >= this.length) return false;
          var current = this.head;
          //判断是否删除的是第一个节点
          if (position == 0) {
            this.head = this.head.next;
          } else {
            var index = 0;
            var previous = null;
            while (index++ < position) {
              previous = current;
              current = current.next;
            }
            previous.next = current.next;
          }
          this.length -= 1;
          return current.data;
        };
        LinkList.prototype.remove = function (data) {
            var position=this.indexOf(data)
            return this.removeAt(position)
        }
      }
    </script>
  </body>
</html>

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