作业

package com.aila;

public class Ailajiang {


	    public static void main(String[] args) {
	        int[] arr = new int [30];
	        arr[0] = 1;
	        arr[1] = 1;
	        for(int i = 2;i < arr.length;i++)
	            arr[i] = arr[i - 1] + arr[i - 2];
	        for(int i : arr)
	            System.out.println(i);
	    }

	
}

　　

package com.aila;

public class ailasang {
    public static void main(String[] args) {
        human hm[] = new human[3];
        hm[0] = new human("aila",19);
        hm[1] = new human("ailala",18);
        hm[2] = new human("ailalala",20);
        for(int i = 0;i < hm.length;i++)
            hm[i].getInfo();
    }

}

class human{
    private String name;
    private int age;
    public human(String name,int age) {
        this.name = name;
        this.age = age;
    }
    public void getInfo() {
        System.out.println("姓名：" + this.name + " 年龄：" + this.age);

    }
}

　　

package com.aila;

public class ailale {

public static void main(String[] args) {
int[] arr = {1,5,6,7,9,8,3,0,2,4};
for(int i = 0;i < arr.length;i++) {
for(int j = i + 1;j < arr.length;j++) {
if(arr[i] < arr[j]) {
int temp = arr[i];
arr[i] = arr[j];
arr[j] = temp;
}
}

}
for(int i : arr)
System.out.println(i);
}

}

package com.aila;

public class ailala {
        public static void main(String[] args) {
            int[] arr = {1,5,6,7,9,8,3,0,2,4};
            for(int i = 0;i < arr.length;i++) {
                for(int j = 0;j < arr.length - 1 -i;j++) {
                    if(arr[j] < arr[j + 1]) {
                        int temp = arr[j];
                        arr[j] = arr[j + 1];
                        arr[j + 1] = temp;
                    }
                }

            }
            for(int i : arr)
                System.out.println(i);
        }
    
}