第五周上机练习

 1 package dfishf;
 2 
 3 public class wwww {
 4 
 5     public static void main(String[] args) {
 6         // TODO Auto-generated method stub
 7         int ge,shi,bai;
 8         for(int i=100;i<=999;i++){
 9             ge=i%10;
10             shi=i%100/10;
11             bai=i/100;
12             if(ge*ge*ge+shi*shi*shi+bai*bai*bai==i){
13                 System.out.println("所有水仙花数为："+i);
14             }
15         }
16         
17     }
18 }

 1 package dfishf;
 2 
 3 public class wwww {
 4 
 5     public static void main(String[] args) {
 6         // TODO Auto-generated method stub
 7         for(int i=1;i<=7;i++) {
 8             for(int j=1;j<i;j++) {
 9                 System.out.print(j);
10             }
11             System.out.println();
12         }
13     }
14 }

 1 package dfishf;
 2 
 3 public class wwww {
 4 
 5     public static void main(String[] args) {
 6         // TODO Auto-generated method stub
 7         for(int n=1;n<=7;n++){
 8             for(int i=6;i>=1;i--){
 9                 for(int j=1;j<=i;j++){
10                     System.out.print(j);
11                 }
12                     System.out.println();
13             }
14     }
15 }
16     }

 1 package dfishf;
 2 
 3 public class wwww {
 4 
 5     public static void main(String[] args) {
 6         // TODO Auto-generated method stub
 7          for (int i = 1; i <= 6; i++) {
 8                 for (int l = 1; l < 7 - i; l++) {
 9                     System.out.print(" ");
10                 }
11                 for (int j = i; j > 0; j--) {
12                     System.out.print(j);
13                 }
14                 System.out.println();
15             }
16     }
17 }

 1 package dfishf;
 2 
 3 public class wwww {
 4 
 5     public static void main(String[] args) {
 6         // TODO Auto-generated method stub
 7         int  l;
 8         for (int i = 6; i > 0; i--) {
 9             for (l = 0; l <= 6 - i; l++) {
10                 System.out.print(" ");
11             }
12             for (int j = 1; j <= i; j++) {
13                 System.out.print(j);
14             }
15             System.out.println();
16         }
17 }
18 }

 1 package dfishf;
 2 import java.util.Scanner;
 3 public class wwww {
 4 
 5     public static void main(String[] args) {
 6         // TODO Auto-generated method stub
 7         Scanner input=new Scanner(System.in);
 8         System.out.print("输入年份：");
 9         int n=input.nextInt();
10         System.out.print("输入月份：");
11         int y=input.nextInt();
12         System.out.print("输入日期：");
13         int r=input.nextInt();
14         int total=0;
15         for(int i=1;i<y;i++){
16             switch(i){
17             case 4:
18             case 6:
19             case 9:
20             case 11:
21                 total+=30;
22                 break;
23             case 2:
24                 if(n%4==0&&n%100!=0||n%400==0){
25                     total+=29;}
26                 else{
27                     total+=28;}
28                 break;
29             default:
30                 total+=31;
31                 break;
32             }
33         }total+=r;
34         System.out.println("一年中第"+total+"天");
35     }
36 }

 1 package dfishf;
 2 import java.util.Scanner;
 3 public class wwww {
 4 
 5     public static void main(String[] args) {
 6         // TODO Auto-generated method stub
 7         System.out.println("输入一个4位数：");
 8         Scanner input = new Scanner(System.in);
 9         int i = input.nextInt();
10         int q = i / 1000;
11         int b= i / 100 % 10;
12         int s= i / 10 % 10;
13         int g= i % 10;
14         System.out.println("原数为：" + i + "转换为" + (q+ b * 10 + s * 100 + g * 1000));
15     }
16 }