Java输入输出案例，看这篇就够了！！！

Posted 2021-09-15 小胖java攻城狮

A+B(1)

import java.util.Scanner;

public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        while(sc.hasNext()){
            int a = sc.nextInt();
            int b = sc.nextInt();
            System.out.println(a+b);
        }
    }
}

A+B(2)

import java.util.Scanner;

public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        for(int i = 0; i < n; i++){
            int a = sc.nextInt();
            int b = sc.nextInt();
            System.out.println(a+b);
        }
    }
}

A+B(3)

import java.util.Scanner;

public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        while(sc.hasNext()){
            int a = sc.nextInt();
            int b = sc.nextInt();
            if(a == 0 || b == 0)
                return;
            System.out.println(a+b);
        }
    }
}

A+B(4)

import java.util.Scanner;

public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        while(!sc.hasNext("0")){
            int count = sc.nextInt();
            int sum = 0;
            for(int i =0;i < count;i++){
                sum += sc.nextInt();
            }
            System.out.println(sum);
        }
    }
}

A+B(5)

import java.util.Scanner;

public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        int row = sc.nextInt();
        for(int i = 0 ; i < row; i++){
            int count = sc.nextInt();
            int sum = 0;
            for(int j =0;j < count;j++){
                sum += sc.nextInt();
            }
            System.out.println(sum);
        }
    }
}

A+B(6)

import java.util.Scanner;

public class Main{
    public static void main(String[] args){
        Scanner in = new Scanner(System.in);
         
        // 注意 hasNext 和 hasNextLine 的区别
        while (in.hasNextLine()) { // 注意 while 处理多个 case
           
          String[] s1=in.nextLine().split(" ");
          int sum =-Integer.parseInt(s1[0]);
          for(String st:s1){
              if(Integer.parseInt(st)==0) return;
              sum+=Integer.parseInt(st);
          }
          System.out.println(sum);
        }
    }
}

A+B(7)

import java.util.*;
 
public class Main{
    public static void main(String[]args){
        Scanner sc = new Scanner(System.in);
        while(sc.hasNext()){
            String[] str = sc.nextLine().split(" ");
            int sum = 0;
            for(String i:str){
                sum += Integer.parseInt(i);
            }
            System.out.println(sum);
        }
    }
}

字符串排序(1)

import java.util.*;
// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args){
        Scanner in = new Scanner(System.in);
        while(in.hasNextLine()){
            int num =Integer.valueOf(in.nextLine());
            String strings=in.nextLine();
            String[] stringAll = strings.split(" ");
            Arrays.sort(stringAll);
            for(String s1:stringAll){
                System.out.print(s1+" ");
            }
        }
        System.out.println();
    }
}

字符串排序(2)

import java.util.*;
import java.util.Scanner;
public class Main{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
        while(sc.hasNextLine()){
            String[] line = sc.nextLine().split(" ");
            Arrays.sort(line);
            for(String li : line){
                System.out.print(li+" ");
            }
            System.out.println("");
        }
    }
}

字符串排序(3)

import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sn = new Scanner(System.in);
        while (sn.hasNext()){
            String inputS = sn.next();
            String[] inputSList = inputS.split(",");
            Arrays.sort(inputSList);

            for (int i = 0; i<inputSList.length;i++){
                if (i==inputSList.length - 1) {
                    System.out.println(inputSList[i]);
                    break;
                }
                else {
                    System.out.print(inputSList[i] + ",");
                }
            }
        }
    }
}

自测本地通过提交为0

import java.util.*;
 
public class Main{
    public static void main(String[] args){
        Scanner sc=new Scanner(System.in);
        while(sc.hasNext()){
            long a=sc.nextLong();
            long  b=sc.nextLong();
             System.out.println(a+b);
            }
    }
}