Commit e1572b17 by BellCodeEditor

save project

parent f127c3eb
Showing with 22 additions and 29 deletions
import random
alist = []
for i in range(1, 101):
alist.append(i)
num = random.choice(alist)
# 请完善二分查找函数binary_search(),查找出num在列表alist里面的索引位置
def binary_search(alist,num):
low = 0 # 初始最低索引
high = len(alist)-1 # 初始最高索引
while low <= high: # 当最低索引小于等于最高索引
mid = (low + high) // 2
guess = alist[mid]
if guess == num: # 中间值等于查找对象,返回索引
return mid
elif guess < num: # 中间值小于查找对象
low = mid + 1
else: # 中间值大于查找对象
high = mid - 1
return None
result = binary_search(alist, num)
print("老师给的数是:", num)
print("它在列表里的索引是:", result) # 列表从1开始,索引从0开始,所以少1
09:33
我愿化身石桥
import tkinter
# 建立窗口对象
......@@ -32,8 +5,28 @@ root = tkinter.Tk()
root.title("注册") # 设置窗口标题
root.geometry("400x320+500+300") # 设置窗口大小
# 输入框entry;用户输入框
e1 = tkinter.Entry(root,show=None,font=('宋体',14),bg="light grey",width=18) # 显示成明文形式
e1.place(x=140, y=80)
# 密码输入框,左上角坐标:x:140,y:140
e2 = tkinter.Entry(root, show='*', font=('宋体', 14), width=18)
e2.place(x=140, y=140)
# 确认密码输入框,左上角坐标:x:140,y:200
e3 = tkinter.Entry(root, show='*', font=('宋体', 14), width=18)
e3.place(x=140, y=200)
# 注册界面上的文字标签
lab = tkinter.Label(root, text='您好!请填写注册信息', font=('宋体', 15),
fg="black",width=40, height=2,bg="green")
lab.place(x=0,y=0)
# 在输入框前展示文字标签:用户名:、密 码:、确认密码:
lab1 = tkinter.Label(root, text='用户名:', font=("宋体", 12), fg="black")
lab1.place(x=60, y=80)
lab2 = tkinter.Label(root, text='密 码:', font=("宋体", 12), fg="black")
lab2.place(x=60, y=140)
lab3 = tkinter.Label(root, text='确认密码:', font=("宋体", 12), fg="black")
lab3.place(x=50, y=200)
# 保持窗口监听,进入消息循环
root.mainloop()
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