java单链表实现书籍管理系统

本文实例为大家分享了java单链表实现书籍管理系统的具体代码,供大家参考,具体内容如下

书籍管理系统功能:

1).添加图书
2).删除图书
3).查看图书
4).修改书籍
5).修改排序方式
6).模糊查询
7).退出程序

代码实现:

Book类

package com.bookmanagement.book;

public class Book {//书类
 public String no;
 public String name;
 public int price;
 public String type;
 public Book next;
 
 public Book(String Bno,String Bname,int Bprive,String Btype) {
  this.no=Bno;
  this.name=Bname;
  this.price=Bprive;
  this.type=Btype;
 }
 public Book() {
  
 }
 
 //toString方法
 @Override
 public String toString() {
  return "  Bookno=" + no + ",  Bookname=" + name + ",  Bookprice=" + price + ", Booktype=" + type;
 }
 
 
}

1).添加图书

package com.bookmanagement.function;
import java.util.Scanner;
import com.bookmanagement.book.*;
public class AddBook {
 static Scanner input = new Scanner(System.in);
 public static void addbook() {
  
  System.out.println("请输入书编号:");
  String no = input.next();
  System.out.println("请输入书名字:");
  String name = input.next();
  System.out.println("请输入书价格:");
  int price = input.nextInt();
  System.out.println("请输入书类型:");
  String type = input.next();
  Book bo = new Book(no,name,price,type);
  add(bo);
 }
 public static void add(Book bo) {
  Book temp = Test.head;//把头节点赋值给一个辅助类
  boolean falg = false;
  while(true) {
   if(temp.next == null) {//判断链表是否到最后
    break;
   }
   if(Test.stroing %2 == 1) {//判断是否修改了显示顺序
    if(temp.next.no.compareToIgnoreCase(bo.no)<0) {//寻找适合的位置插入节点//跳过头节点
     break;
    }else if(temp.next.no.compareToIgnoreCase(bo.no)==0){
     falg = true;
     break;
    }
   }else {
    if(temp.next.no.compareToIgnoreCase(bo.no)>0) {//寻找适合的位置插入节点//跳过头节点
     break;
    }else if(temp.next.no.compareToIgnoreCase(bo.no)==0){
     falg = true;
     break;
    }
    
    
   }
   //节点后移
   temp = temp.next;
  }
  if(falg) {//判断是否输入相同的编号
   System.out.println("插入"+bo.no+"的数据编号已存在");
  }else {
   bo.next = temp.next;
   temp.next = bo;
  }
  
 }
 
}

2).删除图书

package com.bookmanagement.function;
import java.util.Scanner;
import com.bookmanagement.book.*;
public class DropBook {
 static Scanner input = new Scanner(System.in);
 public static void dropbook() {
  System.out.println("请输入需要删除图书的编号:");
  String no = input.next();
  Book temp = Test.head;
  boolean falg = false;
  while(true) {
   if(temp.next == null) {//判断链表是否到最后
    break;
   }
   if(temp.next.no.compareToIgnoreCase(no)==0) {
    falg = true;
    break;
   }
   temp = temp.next;//temp位移
  }
  if(falg) {
    temp.next=temp.next.next;//找到temp.next域指向删除的编号让下一个next覆盖
    //如果需要删除的编号下一个next域指向的是null则temp.next域则下一个指向为空
    System.out.println("删除成功");
  }else {
   System.out.println("没有找到该书籍");
  }
  
   
 }
}

3).查看图书

package com.bookmanagement.function;
import com.bookmanagement.book.*;
public class ShowBook {
 public static void showbook() {
  if(Test.head.next == null) {
   System.out.println("没有书籍数据");
   return;
  }
  Book temp = Test.head.next;//输出头节点下一个节点
  int sum=0;
  while(true) {
   if(temp == null) {
    break;
   }
   System.out.println(temp);
   sum++;
   temp = temp.next;//temp位移
  }
  System.out.println("书籍总数为:"+sum);
  
 }
}

4).修改书籍

package com.bookmanagement.function;
import java.util.Scanner;
import com.bookmanagement.book.*;
public class Modify {
 static Scanner input = new Scanner(System.in);
 public static void modidy() {
  System.out.println("请输入需要修改的图书的编号:");
  String no = input.next();
  Book temp = Test.head;
  boolean ts = false;
  while(true) {
   if(temp.next == null) {
    break;
   }
   if(temp.next.no.compareToIgnoreCase(no)==0) {
    ts = true;
    break;
   }
   temp = temp.next;
  }
  if(ts) {
   System.out.println("修改:1.名字 2.编号 3.价格 4.类型");
   int falg = input.nextInt();
   switch (falg) {
   case 1:
    System.out.println("请输入需要修改的名字:");
    String name = input.next();
    temp.next.name = name;
    break;
   case 2:
    System.out.println("请输入需要修改的编号:");
    String Mno = input.next();
    temp.next.no = Mno;
    Book change = temp.next;
    temp.next=temp.next.next;
    AddBook.add(change);
    //重新调用add方法
    break;
   case 3:
    System.out.println("请输入需要修改的价格:");
    int prive = input.nextInt();
    temp.next.price = prive;
    break;
   case 4:
    System.out.println("请输入需要修改的类型:");
    String type= input.next();
    temp.next.type = type;
    break;
   default:System.out.println("输入有误");
    break;
   }
  }else{
   System.out.println("没有找到该书籍");
  } 
 }
}

5).修改排序方式

package com.bookmanagement.function;
import java.util.Scanner;
import com.bookmanagement.book.*;
public class Flash {
 static Scanner input = new Scanner(System.in);
 public static void flashbook() {
  Book everList = new Book("","",0,"");
  Book temp = Test.head.next;//把有数据的赋值给辅助类
  Book next = null;
  if(temp.next == null) {//链表只有一个数据不需要排序
   System.out.println("链表只有一个数据不需要逆序");
   return;
  }
  while(temp != null) {
   next = temp.next;
   temp.next = everList.next;
   everList.next = temp;
   temp = next;
  }
  Test.head.next = everList.next;
  if(Test.stroing%2==1) {
   System.out.println("修改为降序");
  }else {
   System.out.println("修改为升序");
  }
 }
}

6).模糊查询

package com.bookmanagement.function;
import com.bookmanagement.book.*;
import java.util.Scanner;
public class Detailed {
 static Scanner input = new Scanner(System.in);
 public static void detailed() {
  System.out.println("功能:模糊查询");
   detalied1();
 }
 public static void detalied1() {
  System.out.println("输入需要查找的数据:1.书名2.编号3.价格4.类型");
  int falg = input.nextInt();
  switch (falg) {
  case 1:
   DetaBookName();
   break;
  case 2:
   DetaBookNo();
   break;
  case 3:
   DetaBookPrice();
   break;
  case 4:
   DetaBookType();
   break;
  default:
   break;
  }
 }
 public static void DetaBookName() {
  System.out.println("请输入模糊书名:");
  String name = input.next();
  Book temp = Test.head;
  boolean falg = false;
  if(Test.head.next == null) {
   System.out.println("没有书籍信息");
   return;
  }
  while(true) {
   if(temp.next == null) {
    break;
   }
   if(temp.next.name.indexOf(name)==0) {
    System.out.println(temp.next);
    falg = true;
   }
   temp = temp.next;
  }
  if(!falg) {
   System.out.println("没有找到该书籍信息");
  }
 }
 public static void DetaBookNo() {
  System.out.println("请输入模糊编号:");
  String no = input.next();
  Book temp = Test.head;
  boolean falg = false;
  if(Test.head.next == null) {
   System.out.println("没有书籍信息");
   return;
  }
  while(true) {
   if(temp.next == null) {
    break;
   }
   if(temp.next.no.indexOf(no)==0) {
    System.out.println(temp.next);
    falg = true;
   }
   temp = temp.next;
  }
  if(!falg) {
   System.out.println("没有找到该书籍信息");
  }
 }
 static int price;
 public static void DetaBookPrice() {
  System.out.print("输入符号:(>,<,=,>=,<=,!=):");
  String symbol = input.next();
  System.out.print("输入价格:");
  price = input.nextInt();
  System.out.println();
  switch (symbol) {
  case ">":
   GreaterPrice();
   break;
  case "<":
   LessPrice();
   break;
  case "=":
   EqualPrice();
   break;
  case ">=":
   GreaterEqualePrice();
   break;
  case "<=":
   LessEqualePrice();
   break;
  case "!=":
   NotEquale();
   break;
  default:System.out.println("输入错误");
   break;
  }
 }
 public static void GreaterPrice() {
  Book temp = Test.head;
  boolean falg = false;
  if(Test.head.next == null) {
   System.out.println("没有书籍信息");
  }
  while(true) {
   if(temp.next == null) {
    break;
   }
   if(temp.next.price>price) {
    System.out.println(temp.next);
    falg = true;
   }
   temp = temp.next;
  }
  if(!falg) {
   System.out.println("没有书籍符合信息");
  }
 }
 public static void LessPrice() {
  Book temp = Test.head;
  boolean falg = false;
  if(Test.head.next == null) {
   System.out.println("没有书籍信息");
  }
  while(true) {
   if(temp.next == null) {
    break;
   }
   if(temp.next.price=price) {
    System.out.println(temp.next);
    falg = true;
   }
   temp = temp.next;
  }
  if(!falg) {
   System.out.println("没有书籍符合信息");
  }
 }
 public static void LessEqualePrice() {
  Book temp = Test.head;
  boolean falg = false;
  if(Test.head.next == null) {
   System.out.println("没有书籍信息");
  }
  while(true) {
   if(temp.next == null) {
    break;
   }
   if(temp.next.price<=price) {
    System.out.println(temp.next);
    falg = true;
   }
   temp = temp.next;
  }
  if(!falg) {
   System.out.println("没有书籍符合信息");
  }
 }
 public static void NotEquale() {
  Book temp = Test.head;
  boolean falg = false;
  if(Test.head.next == null) {
   System.out.println("没有书籍信息");
  }
  while(true) {
   if(temp.next == null) {
    break;
   }
   if(temp.next.price!=price) {
    System.out.println(temp.next);
    falg = true;
   }
   temp = temp.next;
  }
  if(!falg) {
   System.out.println("没有书籍符合信息");
  }
 }
 public static void DetaBookType() {
  System.out.println("请输入模糊类型:");
  String type = input.next();
  Book temp = Test.head;
  boolean falg = false;
  if(Test.head.next == null) {
   System.out.println("没有书籍信息");
   return;
  }
  while(true) {
   if(temp.next == null) {
    break;
   }
   if(temp.next.type.indexOf(type)==0) {
    System.out.println(temp.next);
    falg = true;
   }
   temp = temp.next;
  }
  if(!falg) {
   System.out.println("没有找到该书籍信息");
  }
 }
 
}

7).测试类

package com.bookmanagement.function;

import java.util.Scanner;
import com.bookmanagement.book.*;
public class Test {
 static int stroing=0;
 public static Book head = new Book("","",0,"");//建立链表头
 public static void main(String[] args) {
  Scanner input = new Scanner(System.in);
  System.out.println("-----欢迎进入图书管理系统-----");
  boolean temp = true;
  while(temp) {
   System.out.println("1).添加图书");
   System.out.println("2).删除图书");
   System.out.println("3).查看图书");
   System.out.println("4).修改书籍");
   System.out.println("5).修改排序方式");
   System.out.println("6).模糊查询");
   System.out.println("7).退出程序");
   int choose = input.nextInt();
   switch (choose) {
   case 1:
    AddBook.addbook();//添加书籍
    break;
   case 2:
    DropBook.dropbook();//删除书籍
    break;
   case 3:
    ShowBook.showbook();//查看书籍
    break;
   case 4:
    Modify.modidy();//修改书籍
    break;
   case 5:
    stroing++;
    Flash.flashbook();//修改排序方式
    break;
   case 6:
    Detailed.detailed();//模糊查询
    break;
   case 7:
    temp = false;//退出程序
    break;
   default:System.out.println("输入错误");
    break;
   }
  }
  System.out.println("程序退出,欢迎下次使用");
  input.close();
 }
}

以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持脚本之家。

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