java跑马灯（旋转打印）

一维数组和二维数组的跑马灯，随机生成一个随机数，数组的步长为该随机数，一直进行两两交换，直到返回原来的模样。
二维分内圈循环和外圈循环，内圈循环为逆时针，外圈循环为顺时针

import java.util.ArrayList;
import java.util.Arrays;
public class SecondWeek_three {
	public static void main(String[] args) {
		int n=(int)(Math.random()*3+1);//随机外围步长
		System.out.println("外围步长为:"+n);
		/*一维跑马灯*/
		Integer[] arr=new Integer[40];
		Integer[] newArr=new Integer[40];
		for(int i=0;i{
	T[] arr;
	T[] newArr;
	int number;
	int count=0;
	public runhorselight(T[] arr,T[] newArr,int n) {
		this.arr=arr;
		number=n;
		this.newArr=newArr;
	}
	void change() {
		T temp;
		for(int i=0;i{
	T[][] arr;
	T[][] newArr;
	int number;
	int number_inside=(int)(Math.random()*2+1);
	int count=0;
	public runhorselight_doublefour(T[][] arr,T[][] newArr,int n) {
		this.arr=arr;
		number=n;
		this.newArr=newArr;
	}
	void change_outside() {
		int change;
		int changefirst,changesecond;
		int i=0,j=0;
		do
		{
			T temp=arr[i][j];
			if(i==0 && j!=3) {
				change=j+number;
				if(change>3) {
					changesecond=3;
					changefirst=change-changesecond;
					arr[i][j]=arr[changefirst][changesecond];
					arr[changefirst][changesecond]=temp;
				}
				else {
					arr[i][j]=arr[i][j+number];
					arr[i][j+number]=temp;
				}
				count++;
				j++;
			}
			else if(i!=3 && j==3) {
				change=i+number;
				if(change>3) {
					changefirst=3;
					changesecond=change-j;
					arr[i][j]=arr[changefirst][3-changesecond];
					arr[changefirst][3-changesecond]=temp;
				}
				else {
					arr[i][j]=arr[i+number][j];
					arr[i+number][j]=temp;
				}
				count++;
				i++;
			}
			else if(i==3 && j!=0) {
				change=j-number;
				if(change>0) {
					arr[i][j]=arr[i][change];
					arr[i][change]=temp;
				}
				else {
					changesecond=0;
					arr[i][j]=arr[i+change][changesecond];
					arr[i+change][changesecond]=temp;
				}
				count++;
				j--;
			}
			else{
				change=i-number;
				if(change>0) {
					arr[i][j]=arr[change][j];
					arr[change][j]=temp;
				}
				else {
					changefirst=0;
					arr[i][j]=arr[changefirst][-change];
					arr[changefirst][-change]=temp;
				}
				count++;
				i--;
			}
		}while(Arrays.equals(arr[0], newArr[0])!=true);
	}
	void change_inside() {//内圈每次步长为1或2
		int i=1,j=1;
		int change;
		System.out.println("内圈步长："+number_inside);
		do {
			T temp=arr[i][j];
			if(j==1 && i==1) {
				change=i+number_inside;
				if(change==2) {
					arr[i][j]=arr[i+1][j];
					arr[i+1][j]=temp;
				}
				else {
					arr[i][j]=arr[i+1][j+1];
					arr[i+1][j+1]=temp;
				}
				count++;
				i++;
			}
			else if(i==2 && j==1) {
				change=j+number_inside;
				if(change==2) {
					arr[i][j]=arr[i][j+1];
					arr[i][j+1]=temp;
				}
				else {
					arr[i][j]=arr[i-1][j+1];
					arr[i-1][j+1]=temp;
				}
				count++;
				j++;
			}
			else if(i==2 && j==2) {
				change=2-number_inside;
				if(change==1) {
					arr[i][j]=arr[i-1][j];
					arr[i-1][j]=temp;
				}
				else {
					arr[i][j]=arr[i-1][j-1];
					arr[i-1][j-1]=temp;
				}
				count++;
				i--;
				
			}
			else {
				change=j-number_inside;
				if(change==1) {
					arr[i][j]=arr[i][j-1];
					arr[i][j-1]=temp;
				}
				else {
					arr[i][j]=arr[i+1][j-1];
					arr[i+1][j-1]=temp;
				}
				count++;
				j--;
			}
			
		}while(Arrays.equals(arr[1], newArr[1])!=true);
	}
	void judge() {
		change_outside();
		change_inside();
	}
	void show() {
		for(int i=0;i<4;i++) {
			for(int j=0;j<4;j++) {
				System.out.print(arr[i][j]+" ");
			}
			System.out.println();
		}
		System.out.println("out-circle has run "+count+" times!");
	}
}