汉诺塔（TowerofHanoi）问题--java

代码摘自《Java语言程序设计（基础篇）》

问题描述

利用C，将A中的由小到大排列的盘子，移动到B中。且移动过程中。小盘子始终防止大盘子的上方

import java.util.Scanner;


//借助B，将A中的n个盘子移动到C
public class TowerofHanoi {
	public static void main(String[] args){
		Scanner input =new Scanner(System.in);
		System.out.println("please input disks num : ");
		int disks=input.nextInt();
		moveDisk(disks,'A','C','B');
		
	}

	private static void moveDisk(int disks, char fromPan , char midPan, char toPan) {
		// TODO Auto-generated method stub
		if(disks==1)
			System.out.println("move disk "+disks+" from "+ fromPan +" to "+toPan);
		else{
			moveDisk(disks-1, fromPan, toPan, midPan);
			System.out.println("move disk "+disks+" from "+ fromPan +" to "+toPan);
			moveDisk(disks-1, midPan, fromPan,toPan);
		}
		
	}

}

输出结果

please input disks num : 
4
move disk 1 from A to C
move disk 2 from A to B
move disk 1 from C to B
move disk 3 from A to C
move disk 1 from B to A
move disk 2 from B to C
move disk 1 from A to C
move disk 4 from A to B
move disk 1 from C to B
move disk 2 from C to A
move disk 1 from B to A
move disk 3 from C to B
move disk 1 from A to C
move disk 2 from A to B
move disk 1 from C to B