. 1 Import Tkinter
2 from tkinter.scrolledtext Import ScrolledText
. 3 the root = tkinter.Tk ()
. 4 root.title ( ' Towers of Hanoi Solver ' )
. 5 root.geometry ( ' 300x200 ' )
. 6 root.resizable (width = False, height = True)
7 tkinter.Label(root, text= ' Please enter the number of floors of the Tower of Hanoi ' , font=( ' Microsoft Yahei ' , 12 )).pack()
8 var = tkinter.StringVar()
9e = tkinter.Entry(root, textvariable = var)
10 e.pack()
11 t = tkinter.scrolledtext.ScrolledText(root)
12 ans = []
13 def hanoi(n, x, y, z):
14 if n . 1 == :
15 ans.append (+ x ' -> ' + Z)
16 the else :
. 17 Hanoi (n-1, x, Z, Y) # front n-1 on a plate moves from x to Y
18 is ans.append (+ x ' -> ' + Z) # the last tray from the lowermost to move the x Z
. 19 Hanoi (n-1, y, X, Z) # to the n-1 in the y-plate moves to the Z
20 is return ANS
21 is DEF Calc ():
22 is del ANS [:]
23 is n-= int (var.get ( ))
24 str2 = hanoi(n, ' x ' , ' y ' , ' z ' )
25 t.delete(0.0 , tkinter.END)
26 count = 0
27 for stre in str2:
28 count = count + 1
29 t .insert(tkinter.END,' First ' + STR (COUNT) + ' Step: ' + + STRE ' /n- ' )
30 t.Insert (1.0, ' [total ' + STR (COUNT) + ' Step]/n- ' )
31 is t.pack ( )
32 tkinter.Button(root, text= " OK " , command= calc)
.pack() 33 root.mainloop()