数组11.21第13次作业

package cn.wzx.www;

//1 1 2 3 5 8 13 
public class Fibonacci {

    public static void main(String[] args) {
        // TODO 自动生成的方法存根
        int i;
        int[] arr = new int[30];
        arr[0] = 1;
        arr[1] = 1;
        System.out.println(arr[0]);
        System.out.println(arr[1]);
        for (i = 2; i < arr.length; i++) {
            arr[i] = arr[i - 1] + arr[i - 2];
            System.out.println(arr[i]);
        }

    }

}

选择排序法

package cn.wzx.www;

public class Select {

    public static void main(String[] args) {
        // TODO 自动生成的方法存根
        int i, j, temp;
        int arr[] = { 100, 45, 39, 68, 99, 345, 436, 999, 234, 278 };
        for (i = 0; i < arr.length - 1; i++) {
            for (j = i + 1; j < arr.length; j++) {
                if (arr[i] > arr[j]) {
                    temp = arr[i];
                    arr[i] = arr[j];
                    arr[j] = temp;
                }

            }

        }
        for (i = 0; i < arr.length; i++) {
            System.out.println(arr[i]);
        }

    }

}

 冒泡排序法

package cn.wzx.www;

public class Maopao {

    public static void main(String[] args) {
        // TODO 自动生成的方法存根
        int i, j, temp=0;
        int arr[] = { 100, 45, 39, 68, 99, 345, 436, 999, 234, 278 };
        for(i=0;i<arr.length;i++){
            for(j=0;j<arr.length-1;j++){
                if(arr[j]>arr[j+1]){
                temp=arr[j];
                arr[j]=arr[j+1];
                arr[j+1]=temp;
                }
            }
        }
        for (i = 0; i < arr.length; i++) {
            System.out.println(arr[i]);
        }

    }
}
    

package cn.wzx.www;

public class PersonArr {

    public static void main(String[] args) {
        // TODO 自动生成的方法存根
        person per[]=new person[3];
        per[0]=new person ("张三",20);
        per[1]=new person ("李四",30);
        per[2]=new person ("王五",40);
        for(int i=0;i<per.length;i++){
            per[i].getinfo();
        }
    }
    
}
class person{
    private String name;
    private int age;
    public person(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.wzx.www;

public class PersonArr
{
    public static void main(String args[])
    {
        person per[]=new person[3];
        per[0]=new person("张三",20);
        per[1]=new person("李四",22);
        per[2]=new person("王五",23);
        for (int x=0;x<per.length;x++)
        {
            per[x].getinfo();
        }
    }
}
class person
{
    private String name;
    private int age;
    public person(String name,int age)
    {
        this.name=name;
        this.age=age;
    }
    public void getinfo()
    {
        System.out.println("姓名: "+this.name+" 年龄: "+this.age);
    }
}
*/