auto save

my_search.py

-import random
-
+from random import choice()
 alist = []
 alist = []
 for i in range(1, 101):
 for i in range(1, 101):
     alist.append(i)
     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):
+num =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
+def binary_search(alist,num):
+    guess=0
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+    low=0
+    high=len(alist)-1
+    while low>=high:
+        mid=(low+high)//2
+        if alist[mid]==num:return mid
+        elif alist[mid]<num:
+print(binary_search(alist,num))
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