save project

binary_search.py

-# 使用二分查找法，找出9和20在列表里面的索引
-import random
-alist=[]
-for i in range(1,101):
-    alist.append(i)
-num=random.choice(alist)
-
-def binary_search(alist,num):
-    low=0
-    high=len(alist)-1
-    while low<=high:
-        mid = (low+high)//2
-        guess=alist[mid]
-        if guess==num:
-            print("找到了，他在列表里的索引是",mid)
-            break
-        elif guess<num:
-            low=mid+1
-        else :
-            hide=mid-1
-    return None
-result=binary_search(alist,num)
-print("老师给的数是",num)
-print("他在列表里的索引是",result)
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+import tkinter
+root=tkinter.Tk()
+root.title("注册")
+root.geometry("400x300+500+300")
+root.mainloop()
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