for循环 求和

 老师写的代码  找出了规律 代码有更好的延展性

import java.util.Scanner;
public class For02{
    public static void main(String[] args){
    
    //Scanner myScanner = new Scanner(System.in);
    System.out.println("0到5想加为5的全部组合");
    
    //int m = myScanner.nextInt();
    //i为9的倍数的数值， j为计数器
    
    int n=5;
    for(int i=0;i<=n;i++){
        
        System.out.println(i+"+"+(n-i)+"="+n+"\n");
    
    }
    
    
    }
    
}

 

 

 

import java.util.Scanner;
public class For02{
    public static void main(String[] args){
    
    //Scanner myScanner = new Scanner(System.in);
    System.out.println("0到5想加为5的全部组合");
    
    //int m = myScanner.nextInt();
    //i为9的倍数的数值， j为计数器
    
    
    for(int i=0,j=5;i<=5;i++,j--){
        int su=0;
        su =i+j;//求和
        System.out.println("第"+i+"次,"+i+"+"+j+"="+su+"\n");

        
        
    
    }
    
    
    }
    
}