利用python实现的汉诺塔。带有图形演示
from time import sleep
def disp_sym(num,sym):
print(sym*num,end='')
#recusion
def hanoi(a,b,c,n,tray_num):
if n == 1:
move_tray(a,c)
disp(tray_num)
sleep(0.7)
else:
hanoi(a,n-1,tray_num)
move_tray(a,c)
disp(tray_num)
sleep(0.7)
hanoi(b,a,tray_num)
def move_tray(a,b):
for i in a:
if i != 0:
for j in b:
if j != 0:
b[b.index(j) - 1] = i
a[a.index(i)] = 0
return
b.append(i)
b.pop(0)
a[a.index(i)] = 0
return
def disp(tray_num):
global a,c
for i in range(tray_num):
for j in ['a','b','c']:
disp_sym(5,' ')
eval('disp_sym(tray_num - ' + j + "[i],' ')")
eval('disp_sym(' + j + "[i],'=')")
disp_sym(1,'|')
eval('disp_sym(' + j + "[i],'=')")
eval('disp_sym(tray_num - ' + j + "[i],' ')")
print()
print('---------------------------------------------------------------------------')
tray_num=int(input("Please input the number of trays:"))
tray=[]
for i in range(tray_num):
tray.append(i + 1)
a=[0]*tray_num
b=a[:]
c=a[:]
a = tray[:]
disp(tray_num)
hanoi(a,tray_num,tray_num)
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