From 1798c80ade87b9b96674fdbba5fdba150b504649 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E9=82=B9=E4=BA=A8=E4=BC=9F?= <529310475@qq.com>
Date: Sun, 25 Dec 2022 23:49:19 +0800
Subject: [PATCH] =?UTF-8?q?25=E5=8F=B7=E7=9A=84=E4=BD=9C=E4=B8=9A?=
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---
 .../20221225\344\275\234\344\270\232.md"      | 153 ++++++++++++++++++
 1 file changed, 153 insertions(+)
 create mode 100644 "11 \351\202\271\344\272\250\344\274\237/20221225\344\275\234\344\270\232.md"

diff --git "a/11 \351\202\271\344\272\250\344\274\237/20221225\344\275\234\344\270\232.md" "b/11 \351\202\271\344\272\250\344\274\237/20221225\344\275\234\344\270\232.md"
new file mode 100644
index 0000000..0229ce9
--- /dev/null
+++ "b/11 \351\202\271\344\272\250\344\274\237/20221225\344\275\234\344\270\232.md"	
@@ -0,0 +1,153 @@
+# 作业
+
+```java
+import java.util.Scanner;
+
+public class GLXT {
+
+    public static void main(String[] args) {
+        String[] books = new String[10];
+        books[0] = "带哦觉得";
+        books[1] = "大大";
+        books[2] = "大苏打";
+
+        while (true) {
+            start();
+            int num = choice();
+            todo(num, books);
+            if (num==6){
+                break;
+            }
+        }
+
+    }
+
+    public static void start() {
+        System.out.println("---------------------------------\n" +
+                "-       欢迎使用帝华书籍系统      -\n" +
+                "- \t\t 1.浏览所有的书籍信息\t\t-\n" +
+                "\t\t 2.添加书籍信息\t\t-\n" +
+                "\t\t 3.修改书籍信息\t\t-\n" +
+                "\t\t 4.删除书籍信息\t\t-\n" +
+                "\t\t 5.查询书籍信息\t\t-\n" +
+                "\t\t 6.退出书籍信息\t\t-\n" +
+                "-----------------------");
+    }
+
+    public static int choice() {
+        System.out.println("选择您的操作：");
+        Scanner Sc = new Scanner(System.in);
+        int num = Sc.nextInt();
+        return num;
+    }
+
+    public static void todo(int num, String[] books) {
+        switch (num) {
+            case 1:
+                //System.out.println("浏览所有的书籍信息");
+                viewallbook(books);
+                break;
+            case 2:
+                //System.out.println("添加书籍信息");
+                addBook(books);
+                break;
+            case 3:
+                //System.out.println("修改书籍信息");
+                ediBook(books);
+                break;
+            case 4:
+                //System.out.println("删除书籍信息");
+                DeleteBook(books);
+                break;
+            case 5:
+                SearchBook(books);
+                //System.out.println("查询书籍信息");
+                break;
+            case 6:
+                System.out.println("退出书籍信息");
+                break;
+            default:
+                System.out.println("选择错误，没有该功能");
+        }
+    }
+
+    private static void viewallbook(String[] books) {
+        for (String name : books) {
+            if (name==null){
+                continue;
+            }
+            System.out.print(name + "\t");
+        }
+    }
+
+    public static void addBook(String[] books) {
+        System.out.println("请输入你要添加的学生姓名");
+        Scanner Sc = new Scanner(System.in);
+        String name = Sc.next();
+        int index = searChaArr(books, null);
+        books[index] = name;
+        System.out.println("添加成功");
+    }
+
+    public static void ediBook(String[] books) {
+        System.out.println("请输入你要修改的学生姓名");
+        Scanner Sc = new Scanner(System.in);
+        String name = Sc.next();
+        int index = searChaArr(books,name);
+        if (index == -1) {
+            System.out.println("对不起，您查找的书籍不存在");
+        } else {
+            System.out.println("输入新的书名");
+            String NewName = Sc.next();
+            books[index] = NewName;
+            System.out.println("修改成功");
+        }
+    }
+
+    public static int searChaArr(String[] books, String name) {
+        int index = -1;
+        if (name == null) {
+            for (int i = 0; i < books.length; i++) {
+                if (books[i] == null) {
+                    index = i;
+                    break;
+                }
+            }
+        } else {
+            for (int i = 0; i < books.length; i++) {
+                if (name.equals(books[i])) {
+                    index = i;
+                    break;
+                }
+            }
+
+
+        }
+
+        return index;
+    }
+public static void DeleteBook(String[] books){
+          System.out.println("请输入你要删除的学生姓名");
+        Scanner Sc = new Scanner(System.in);
+        String name =Sc.next();
+        int index = searChaArr(books,name);
+        if (index==-1){
+            System.out.println("无法删除，因为没有这本书");
+        }else{
+            books[index]=null;
+        }
+
+    }
+    public static void SearchBook(String[] books){
+        System.out.println("请输入你要查询的学生姓名");
+        Scanner Sc = new Scanner(System.in);
+        String name =Sc.next();
+        int index = searChaArr(books,name);
+        if (index==-1){
+            System.out.println("无效信息，因为没有这本书");
+        }else{
+            System.out.println("找到了，它在"+(index+1)+"个");
+        }
+    }
+}
+```
\ No newline at end of file
-- 
Gitee