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【数据结构连载一线性表】【单向循环链表】javascript
阅读量:480 次
发布时间:2019-03-06

本文共 3820 字,大约阅读时间需要 12 分钟。

function Node() {       this.data = null;    this.next = null;}function CycleLinkedList() {       this.length = 0;    this.rear = new Node();    this.rear.next = this.rear;    this.empty = function () {           return this.rear === this.rear.next    };    this.exist = function (value) {           let cur = this.rear.next;        const tail = this.rear        while (cur !== tail) {               if (cur.data === value) {                   return true;            }            cur = cur.next;        }        return false    };    this.get = function (index) {           if (index >= l.length) {               throw new Error("下标越界")        }        let cur = l.rear.next;        const tail = l.rear        let n = 0;        while (cur !== tail) {               if (n === index) {                   return cur.data            }            cur = cur.next;            n++;        }    };    this.add = function (value) {           let cur = this.rear;        const new_node = new Node();        new_node.data = value;        new_node.next = cur.next;        this.rear.next = new_node;        this.length++;    };    this.append = function (value) {           const new_node = new Node();        new_node.data = value;        let tail = this.rear;        let cur = this.rear;        while (cur.next !== tail) {               cur = cur.next;        }        new_node.next = cur.next;        cur.next = new_node;        this.length++;    };    this.show = function () {           const tail = this.rear;        let cur = this.rear.next;        let s = "";        while (cur !== tail) {               s += cur.data + " "            cur = cur.next;        }        console.log(s)    };    this.insert = function (index, value) {           let cur = this.rear;        const tail = this.rear;        let n = 0;        const new_node = new Node();        new_node.data = value;        while (cur.next !== tail) {               if (n === index) {                   new_node.next = cur.next;                cur.next = new_node;                this.length++;                return            }            cur = cur.next;            n++;        }        new_node.next = cur.next;        cur.next = new_node;        this.length++;    };    this.index = function (value) {           let cur = this.rear.next;        const tail = this.rear;        let n = 0;        while (cur !== tail) {               if (cur.data === value) {                   return n            }            cur = cur.next;            n++;        }        return -1    };    this.delete = function (index) {           if (index >= this.length) {               throw new Error("下标越界:" + index);        }        let cur = this.rear;        const tail = this.rear;        let n = 0;        while (cur.next !== tail) {               if (n === index) {                   cur.next = cur.next.next;                this.length--;            }            n++;            cur = cur.next;        }    };    this.remove = function (value) {           let cur = this.rear;        const tail = this.rear;        while (tail !== cur.next) {               if (cur.next.data === value) {                   cur.next = cur.next.next;                this.length--;                return            }            cur = cur.next;        }        throw new Error("删除数据不存在" + value);    };    this.pop = function () {           let cur = this.rear;        const tail = this.rear;        while (tail !== cur.next.next) {               cur = cur.next;        }        const data = cur.next.data;        cur.next = cur.next.next;        this.tail = cur        this.length--;        return data;    }}l = new CycleLinkedList();l.add(10)l.add(9)l.add(8)l.add(7)l.append(7)l.insert(8, 19)console.log(l.exist(19))console.log(l.index(10))l.show()console.log(l.pop())console.log(l.pop())l.show()

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