1 import java.util.Scanner;
2
3
4 public class exercise {
5
6 public static void main(String[] args) {
7 int select;
8 do{
9 System.out.println("请问您想要进行单利计算还是复利计算：1.单利 2.复利");
10 Scanner keyin0=new Scanner(System.in);
11 select=keyin0.nextInt();
12 }while(select!=1&&select!=2);
13 System.out.println("请输入您想要存储的金额数量：");
14 Scanner keyin1=new Scanner(System.in);
15 double originalMoney=keyin1.nextDouble();
16 System.out.println("请输入您想要存储金额的时间(年):");
17 Scanner keyin2=new Scanner(System.in);
18 int year=keyin2.nextInt();
19 System.out.println("请输入您想要设计的年利率：");
20 Scanner keyin3=new Scanner(System.in);
21 double rate=keyin3.nextDouble();
22 double sumValue=originalMoney;
23 if(select==1)
24 {
25 double singleValue=originalMoney*(1+rate*year);
26 System.out.println("存入第"+year+"年后的存款总额为："+singleValue);
27 do{
28 System.out.println("请问您想要计算本金问题吗：1.需要 2.不需要");
29 select=new Scanner(System.in).nextInt();
30 }while(select!=1&&select!=2);
31 if(select==1){
32 System.out.println("请输入您想要筹到的金额：");
33 singleValue=new Scanner(System.in).nextDouble();
34 System.out.println("请输入您想要存储金额的时间(年):");
35 year=new Scanner(System.in).nextInt();
36 System.out.println("请输入您想要设计的年利率：");
37 rate=new Scanner(System.in).nextDouble();
38 originalMoney=singleValue/(1+rate*year);
39 System.out.println("需要本金"+originalMoney+"元");
40 }
41 }
42 else
43 {
44 for(int i = 1 ; i<=year; i++){
45 sumValue= (1+ rate)*sumValue;
46
47 }
48 System.out.println("存入第"+year+"年后的存款总额为："+sumValue);
49 do{
50 System.out.println("请问您想要计算本金问题吗：1.需要 2.不需要");
51 select=new Scanner(System.in).nextInt();
52 }while(select!=1&&select!=2);
53 if(select==1){
54 System.out.println("请输入您想要筹到的金额：");
55 sumValue=new Scanner(System.in).nextDouble();
56 System.out.println("请输入您想要存储金额的时间(年):");
57 year=new Scanner(System.in).nextInt();
58 System.out.println("请输入您想要设计的年利率：");
59 rate=new Scanner(System.in).nextDouble();
60 for(int i = 1 ; i<=year; i++){
61 sumValue= sumValue/(1+ rate);
62
63 }
64 originalMoney=sumValue;
65 System.out.println("需要本金"+originalMoney+"元");
66 }
67 do{
68 System.out.println("请问您想要计算时间问题吗：1.需要 2.不需要");
69 select=new Scanner(System.in).nextInt();
70 }while(select!=1&&select!=2);
71 if(select==1){
72 System.out.println("请输入您想要存储的金额数量：");
73 originalMoney=new Scanner(System.in).nextDouble();
74 System.out.println("请输入到期后您想要获取的金额：");
75 sumValue=new Scanner(System.in).nextInt();
76 System.out.println("请输入您想要设计的年利率：");
77 rate=new Scanner(System.in).nextDouble();
78 year=1;
79 for(; sumValue>originalMoney;year++){
80 originalMoney= originalMoney*(1+ rate);
81
82 }
83 year--;
84 System.out.println("需要"+year+"年时间");
85 }
86
87
88
89 }
90
91 }
92
93 }
