Java 输入 输出

1: 单组输入 a+b   sdut  1000

 1 import java.util.Scanner;  
 2 public class Main {  
 3     public static void main(String args[]){  
 4           
 5         Scanner r = new Scanner(System.in) ;  
 6          int a = r.nextInt();  
 7          int b = r.nextInt();  
 8          int c = a + b;  
 9          System.out.println(c);  
10            
11     }  
12       
13   
14 }  
15    
16   

2: 多组输入 a+b  sdut 1010

 1 import java.util.Scanner;
 2 public class Main{
 3     
 4     public static void main(String args[]){
 5         
 6         
 7            int a,b;
 8            
 9            Scanner cin = new Scanner(System.in);
10            
11            
12            while(cin.hasNextInt()){      //  实现多组输入 ,求  a+b的和
13                a = cin.nextInt();
14                b = cin.nextInt();
15                System.out.println(a+b) ;
16            }
17     }
18    
19     
20 
21 }

 3: 多组输入 

    http://acm.hdu.edu.cn/showproblem.php?pid=1090

  

 1 import java.util.*;
 2 public class Main{
 3     
 4     public static void main(String args[]){
 5         
 6        int n,a,b;
 7        Scanner cin = new Scanner(System.in) ;
 8        
 9        n = cin.nextInt() ;
10        for(int i = 0;i < n;i++){
11            
12            a = cin.nextInt();
13            b = cin.nextInt();
14            System.out.println(a+b) ;
15                    
16        }
17           
18            
19     }
20    
21     
22 
23 }

 4:hdu  1092   http://acm.hdu.edu.cn/showproblem.php?pid=1092

输入:
4 1 2 3 4
5 1 2 3 4 5
0 
输出:
10
15



 import java.util.*;
 public class Main{
	 
	 public static void main(String args[]){
		 
		 Scanner cin = new Scanner(System.in) ;
		 
		 while(cin.hasNextInt()){
			 
			 int  n = cin.nextInt();
			 if(n == 0)break ; 
			 int  sum = 0 ;
			 for(int i = 0 ; i<n;i++){
				 
				  sum += cin.nextInt();
				 
				 
			 }
			 System.out.println(sum) ;
		 }
	 }

	 
	 
 }

 hdu  1096    http://acm.hdu.edu.cn/showproblem.php?pid=1096

 

  

View Code
 1  import java.util.*;
 2  public class Main{
 3      
 4     public static void main(String args[]){
 5         
 6         Scanner cin = new Scanner(System.in) ;
 7         
 8         int n = cin.nextInt() ;
 9         while(n != 0){
10             
11             int  num = cin.nextInt();
12             int sum = 0 ; 
13             for(int i = 0 ; i < num;i++){
14                 
15                 sum += cin.nextInt();
16                 
17                 
18             }
19             System.out.println(sum) ;
20             n--;
21             if(n != 0) System.out.println() ;// 换行
22         }
23         
24         
25         
26     }
27      
28      
29  }

 

posted @ 2013-03-02 21:17  Szz  阅读(357)  评论(3编辑  收藏  举报