python编程冒泡排序法实现动图排序示例解析

>>> def Bubble(List):
	L = len(List)-1
	for i in range(L):
		for j in range(L-i):
			if List[j]>List[j+1]:
				List[j],List[j+1]=List[j+1],List[j]
	return List
 
>>> lst = [randint(1,20) for _ in range(15)]
>>> lst
[1, 10, 4, 18, 3, 15, 8, 8, 20, 12, 14, 14, 20, 6, 19]
>>> Bubble(lst)
[1, 3, 4, 6, 8, 8, 10, 12, 14, 14, 15, 18, 19, 20, 20]

import tkinter as tk
from random import randint
from time import sleep
 
def init():
    global rect,font,pos,lst,step
    count = 20
    rect,font,pos = [0]*count,[0]*count,[]
    lst = [randint(1,20) for _ in range(count)]
    x,y = 45,330
    width,step = 15,28
    cv.delete('all')
    for i in range(count):
        pos.append((x+i*step,y-lst[i]*width,x+i*step+width,y))
        sleep(0.1)
        rect[i] = cv.create_rectangle(pos[i], fill='royalblue')
        font[i] = cv.create_text(x+i*step+7,y+10,text=str(lst[i]),anchor=tk.CENTER)
        cv.update()
    btn2.configure(state=tk.NORMAL)
    btn1.configure(state=tk.DISABLED) 
def bubble():
    global cv,rect,font,pos,lst,step
    L = len(lst)-1
    btn2.configure(state=tk.DISABLED)
    for i in range(L):
        for j in range(L-i):
            if lst[j]>lst[j+1]:
                lst[j],lst[j+1] = lst[j+1],lst[j]
                cv.move(rect[j],step,0)
                cv.move(rect[j+1],-step,0)
                rect[j],rect[j+1]=rect[j+1],rect[j]
                cv.itemconfig(font[j],text = str(lst[j]),fill='red')
                cv.itemconfig(font[j+1],text = str(lst[j+1]),fill='red')
                cv.itemconfig(rect[j],fill='orangered')
                cv.itemconfig(rect[j+1],fill='orangered')
                cv.update()
                sleep(0.4)
                cv.itemconfig(font[j],fill='black')
                cv.itemconfig(font[j+1],fill='black')
                cv.itemconfig(rect[j],fill='royalblue')
                cv.itemconfig(rect[j+1],fill='royalblue')
                cv.update()
    btn1.configure(state=tk.NORMAL)
def main():
    global cv,btn1,btn2
    root = tk.Tk()
    root.geometry('640x480')
    root.title('Bubble Sort')
    root.resizable(False,False)
    cv = tk.Canvas(root, width=640, height=380, bg='aliceblue')
    cv.pack()
    btn1 = tk.Button(root,text='Create',command=init)
    btn1.place(x=240,y=420)
    btn2 = tk.Button(root,text='Bubble',command=bubble,state=tk.DISABLED)
    btn2.place(x=320,y=420)
    root.mainloop() 
if __name__=="__main__":
 
    app = main()
    

1.root = tk.Tk()   #Tkinter建立窗口 
2.root.geometry('640x480')  #设置分辨率
3.root.title('Bubble Sort')  #设置窗口标题
4.root.resizable(False,False) #取消窗口大小变动

1.cv = tk.Canvas(root, width=640, height=380, bg='aliceblue')  #创建画面
2.cv.pack()  # 控件布局方式： .pack自动填充空间 .place指定位置 
3.btn1 = tk.Button(root,text='Create',command=init)  #创建按钮
4.btn1.place(x=240,y=420)  # place() 指定控件横纵坐标x,y
5.btn2 = tk.Button(root,text='Bubble',command=bubble,state=tk.DISABLED)
6.btn2.place(x=320,y=420)
7.# Canvas(): width height = 宽、高 bg=背景填充色
8.# Button():  text=按钮标题,command=绑定函数,state=按钮状态

1.rect[i] = cv.create_rectangle(pos[i], fill='royalblue')  #在画布上创建矩形
2.font[i] = cv.create_text(x+i*step+7,y+10,text=str(lst[i]),anchor=tk.CENTER)
3.# create_text 参数： X,Y坐标 ,text 文字, anchor=tk.CENTER 居中 
4.btn2.configure(state=tk.NORMAL)  #恢复btn2按钮可点击状态
5.btn1.configure(state=tk.DISABLED) #设置btn2不可点击

1.cv.move(rect[j+1],X,Y) #画布子控件相对位置移动, X,Y正数向右或下，负数反向
2.cv.itemconfig(font[j],text = str(lst[j]),fill='red') #画布子控件的参数设置文字颜色等