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  • 用python去描绘汉诺塔的动态实现。

    话不多说,直接上代码及汉诺塔动态实现图。。。

    import turtle

    class Stack:
    def __init__(self):
    self.items = []
    def isEmpty(self):
    return len(self.items) == 0
    def push(self, item):
    self.items.append(item)
    def pop(self):
    return self.items.pop()
    def peek(self):
    if not self.isEmpty():
    return self.items[len(self.items) - 1]
    def size(self):
    return len(self.items)

    def drawpole_3():#画出汉诺塔的poles
    t = turtle.Turtle()
    t.hideturtle()
    def drawpole_1(k):
    t.up()
    t.pensize(10)
    t.speed(100)
    t.goto(400*(k-1), 100)
    t.down()
    t.goto(400*(k-1), -100)
    t.goto(400*(k-1)-20, -100)
    t.goto(400*(k-1)+20, -100)
    drawpole_1(0)#画出汉诺塔的poles[0]
    drawpole_1(1)#画出汉诺塔的poles[1]
    drawpole_1(2)#画出汉诺塔的poles[2]

    def creat_plates(n):#制造n个盘子
    plates=[turtle.Turtle() for i in range(n)]
    for i in range(n):
    plates[i].up()
    plates[i].hideturtle()
    plates[i].shape("square")
    plates[i].shapesize(1,8-i)
    plates[i].goto(-400,-90+20*i)
    plates[i].showturtle()
    return plates

    def pole_stack():#制造poles的栈
    poles=[Stack() for i in range(3)]
    return poles

    def moveDisk(plates,poles,fp,tp):#把poles[fp]顶端的盘子plates[mov]从poles[fp]移到poles[tp]
    mov=poles[fp].peek()
    plates[mov].goto((fp-1)*400,150)
    plates[mov].goto((tp-1)*400,150)
    l=poles[tp].size()#确定移动到底部的高度(恰好放在原来最上面的盘子上面)
    plates[mov].goto((tp-1)*400,-90+20*l)

    def moveTower(plates,poles,height,fromPole, toPole, withPole):#递归放盘子
    if height >= 1:
    moveTower(plates,poles,height-1,fromPole,withPole,toPole)
    moveDisk(plates,poles,fromPole,toPole)
    poles[toPole].push(poles[fromPole].pop())
    moveTower(plates,poles,height-1,withPole,toPole,fromPole)

    myscreen=turtle.Screen()
    drawpole_3()
    n=int(input("请输入汉诺塔的层数并回车: "))
    plates=creat_plates(n)
    poles=pole_stack()
    for i in range(n):
    poles[0].push(i)
    moveTower(plates,poles,n,0,2,1)
    myscreen.exitonclick()

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  • 原文地址:https://www.cnblogs.com/gsd-tt/p/10611117.html
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