java练习---15

Posted 2020-10-15 Mr、L

 1 package cn.lyh;
 2 
 3 public class L {
 4 　　　　//斐波那契数列
 5     public static void main(String[] args) {
 6         int []arr = new int[30]; 
 7         arr[0]=1;
 8         arr[1]=1;
 9         for(int i=2;i<arr.length;i++)
10             arr[i]=arr[i-1]+arr[i-2];
11         for(int i:arr)
12             System.out.print(i+" 、");
13 
14     }
15 
16 }

package cn.lyh;

public class L {

    public static void main(String[] args) {

        liker  ker[]=new liker[3];
        ker[0]=new liker("Mr、L",11);
        ker[1]=new liker("Mr、Y",17);
        ker[2]=new liker("Mr、H",19);
        for(int i=0;i<ker.length;i++)
            ker[i].getInfo();
    }
    
}
    class liker {
        private String name;
        private int age;
        public liker(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 cn.lyh;

public class L {

    public static void main(String[] args) {
            int array[]= {0,8,4,6,2,5,3,7,9,1};
        for(int i=0;i<array.length;i++)
            for(int j=0;j<array.length-i-1;j++) {
                if(array[j]>array[j+1]) {
                    int temp =array[j];
                    array[j]=array[j+1];
                    array[j+1]=temp;
                }
            }
        for( int i:array)
            System.out.print(i+"  ");
    }
    
}        

 

package cn.lyh;

public class L {

    public static void main(String[] args) {
                int array[]= {0,8,4,6,2,5,3,7,9,1};  //选择排序法
        for(int i=0;i<array.length;i++)
            for(int j=i+1;j<array.length;j++) {
                if(array[j]>array[i]) {
                    int temp =array[j];
                    array[j]=array[i];
                    array[i]=temp;
                }
            }
        for( int i:array)
            System.out.print(i+"  ");
    }
    
}