用shell編寫壹個漢諾塔遊戲的程序，求代碼。

E_NOPARAM=10?#?錯誤碼1：沒有參數傳給腳本?

E_BADPARAM=20?#?錯誤碼2：傳給腳本的盤子數不合法?

Moves=0?#?保存移動次數的全局變量.

dohanoi()?{?#?遞歸函數?

case?$1?in

0)

;;

*)

dohanoi?"$(($1-1))"?$2?$4?$3

echo?move?$2?"-->"?$3

let?"Moves?+=?1"?#?這兒修改了原腳本.

dohanoi?"$(($1-1))"?$4?$3?$2

;;

esac

}

case?$#?in

1)

case?$(($1>0))?in?#?至少要有壹個盤子.

1)

dohanoi?$1?1?3?2

echo?"Total?moves?=?$Moves"

exit?0;

;;

*)

echo?"$0:?illegal?value?for?number?of?disks";

exit?$E_BADPARAM;

;;

esac

;;

*)

echo?"usage:?$0?N"

echo?"?Where?\"N\"?is?the?number?of?disks."

exit?$E_NOPARAM;

;;

esac

根據《高級Bash Shell腳本編程指南.pdf》上的示例改寫。