Java实现汉诺塔移动，只需传一个int值(汉诺塔的阶）

 public class HNT {
     public static void main(String[] args) {
         HNT a1 = new HNT();
         a1.lToR(10);    //给汉诺塔a1左边放10阶的层数，把左边的10阶移动至右边。
     }
     private boolean pHToM(int num,String a,String b,String c) {        //打印移动数据，从a移动到c.
         if (num == 1) {        //只移动一层的情况，return false表示，如果num == 1则不再继续打印num<1的情况
             System.out.printf("%s to %s\n",a,c);
             return false;
         }
         else if (num == 2) {    //只移动两层的情况,return false表示，如果num == 2则不再继续打印num<2的情况
             System.out.printf("%s to %s\n",a,b);
             System.out.printf("%s to %s\n",a,c);
             System.out.printf("%s to %s\n",b,c);
             return false;
         }
         else {        //
             return true;    //移动大于两层的情况，return true表示，如果num>2则继续循环到num<=2为止
         }
     }
     public void lToR(int num) {        //把num层的汉诺塔从左移动至右
         if(pHToM(num,"left","mid","right")) {
             lToM(num - 1);
             lToR(1);
             mToR(num - 1);
         }
     }
     public void lToM(int num) {        //把num层的汉诺塔从左移动至中
         if(pHToM(num,"left","right","mid")) {
             lToR(num - 1);
             lToM(1);
             rToM(num - 1);
         }
     }
     public void mToL(int num) {        //把num层的汉诺塔从中移动至左
         if(pHToM(num,"mid","right","left")) {
             mToR(num - 1);
             mToL(1);
             rToL(num - 1);
         }
     }
     public void mToR(int num) {        //把num层的汉诺塔从中移动至右
         if(pHToM(num,"mid","left","right")) {
             mToL(num - 1);
             mToR(1);
             lToR(num - 1);
         }
     }
     public void rToL(int num) {        //把num层的汉诺塔从右移动至左
         if(pHToM(num,"right","mid","left")) {
             rToM(num - 1);
             rToL(1);
             mToL(num - 1);
         }
     }
     public void rToM(int num) {        //把num层的汉诺塔从右移动至中
         if(pHToM(num,"right","left","mid")){
             rToL(num - 1);
             rToM(1);
             lToM(num - 1);
         }
     }
 }