save project

my_search.py

@@ -9,20 +9,17 @@ num = random.choice(alist)
 def binary_search(alist,num):
     low=0
     high=len(alist)-1
-    mid=(low+high)//2
     while low<=high:
         mid=(high+low)//2
         guess=alist[mid]
         if guess==num:
-            print('找到了',mid)
-            break
+            return mid
         elif guess<num:
             low=mid+1
         else:
             high=mid-1
-binary_search(alist,10)
-
-
+s=binary_search(alist,10)
+print('找到了',s)