hanoi.java

使用JAVA实现的汉诺塔,实现了3阶汉诺塔的移动

import java.io.*;
public class hanoi 
{

    static void hanoi(int n, String startpeg, String middlepeg, String endpeg) 
    {
        if (n == 1)
            System.out.println("move " + startpeg + " to " + endpeg);
        else {
            hanoi(n - 1, startpeg, endpeg, middlepeg);
            System.out.println("move " + startpeg + " to " + endpeg);
            hanoi(n - 1, middlepeg, startpeg, endpeg);
        }
    }

    public static void main(String[] args)throws IOException 
    {
        int n = 0;
        char ans;
        while(true)
        {
        	System.out.print("Please enter the number of the discs: ");
		    BufferedReader input=new BufferedReader(new InputStreamReader(System.in));
		    n=Integer.parseInt(input.readLine());
	        String startpeg = "A";
            String middlepeg = "B";
            String endpeg = "C";
            System.out.println("The solution for n = " + n);
            hanoi(n, startpeg, middlepeg, endpeg);
            System.out.println("Do u want to try again?(y or n");
            ans = (char)input.read();
            if(ans!='y'&&ans!='Y')
		    {  
			    System.out.println("Thank you for using it, goodbye!");
			    break;
		    }
        }                    
    }
}