1 public class 学生管理系统 {
2 public static void main(String[] args) {
3 String[] name1 = new String[100];
4 int[] chengji1 = new int[100];
5 int count = 0;
6 while (true) {
7 int choose = chooseFunction();
8 switch (choose) {
9 case 1:
10 count = add(name1, chengji1, count);
11 break;
12 case 2:
13 count = delete(name1, chengji1, count);
14 break;
15 case 3:
16 change(name1, chengji1, count);
17 break;
18 case 4:
19 find(name1, chengji1, count);
20 break;
21 case 5:
22 update(name1, chengji1, count);
23 break;
24 case 6:
25 exit();
26 return;
27 default:
28 System.out.println("----------------------------------");
29 System.out.println("功能选择有误，请输入正确的功能序号!");
30 break;
31 }
32 }
33 }
34 public static int chooseFunction() {
35 System.out.println("-----学生管理系统-----");
36 System.out.println("功能选项：");
37 System.out.println("1：新增学生");
38 System.out.println("2：删除学生");
39 System.out.println("3：修改学生");
40 System.out.println("4：查找学生");
41 System.out.println("5：查看全部学生");
42 System.out.println("6：退出");
43 //接收键盘输入的功能选项序号
44 Scanner sc = new Scanner(System.in);
45 System.out.print("请输入选项：");
46 int choose = sc.nextInt();
47 return choose;
48 }
49 public static int add(String[]name1,int[]chengji1,int count){
50 System.out.print("添加人姓名：");
51 name1[count]=new Scanner(System.in).next();
52 System.out.print("添加人成绩：");
53 chengji1[count]=new Scanner(System.in).nextInt();
54 System.out.println("添加成功");
55 count++;
56 System.out.println("添加数量为："+count+" ");
57 return count;
58
59 }
60 public static void update(String[]name1,int[]chengji1,int count){
61 for (int i=0;i<count;i++){
62 System.out.println("姓名 成绩");
63 System.out.println(name1[i]+" "+chengji1[i]);
64 }
65 }
66 public static int delete(String[]name1,int[]chengji1,int count){
67 System.out.print("请输入需要删除的学生： ");
68 String n=new Scanner(System.in).next();
69 for(int i=0;i<count;i++){
70 if (n.equals(name1[i])){
71 name1[i]=name1[i+1];
72 chengji1[i]=chengji1[i+1];
73 }
74 }
75 count-=1;
76 System.out.println("删除学生"+n+"成功");
77 return count;
78
79 }
80 public static void change(String[]name1,int[]chengji1,int count){
81 System.out.print("输入要修改的学生姓名：");
82 String name=new Scanner(System.in).next();
83 for (int i=0;i<count;i++){
84 if (name.equals(name1[i])){
85 System.out.println("原姓名: "+name1[i]+"原成绩: "+chengji1[i]);
86 System.out.print("输入修改的姓名：");
87 name1[i] = new Scanner(System.in).next();
88 System.out.print("输入修改的成绩：");
89 chengji1[i] = new Scanner(System.in).nextInt();
90 System.out.println("修改成功");
91 return;
92 }
93 }System.out.println("查无此人");
94 }
95 public static void find(String[]name1,int[]chengji1,int count){
96 System.out.print("请输入需要查找的学生姓名： ");
97 String name=new Scanner(System.in).next();
98 for (int i=0;i<count;i++){
99 if (name.equals(name1[i])){
100 System.out.println("学生: "+name1[i]+"成绩: "+chengji1[i]);
101 return;
102 }
103 }
104 System.out.println("查无此人");
105 }
106 public static void exit(){
107 System.out.println("----------------退出---------------");
108 System.out.println("您已退出系统");
109 }
110 }
