save project

my_search.py

-import random
-# 使用二分查找法，找出9和20在列表里面的索引
-
-alist = [[1, 3, 5, 8, 11, 15, 17, 18, 20, 21]]
-for i in range(1, 101):
-    alist.append(i)
+import tkinter
+root=tkinter.TK()
+root.title("1")
+rootgeometry("400x300")
+root.mainloop()
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-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
-    high=len(alist)-1
-    while (1):
-        mid=(low+high)//2
-        if alist[mid]==num:
-            print(mid)
-            break
-        elif alist[mid]<num:
-            low=mid+1
-        elif alist[mid]>num:
-            high=mid-1
-        if high<=low:
-            print("没")
-            break
-binary_search(alist,num)
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