auto save

my_search.py

@@ -14,4 +14,11 @@ def binary_search(alist,num):
         mid=(high+low)//2
         if alist[mid]==num:
             return mid
-        elif 
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+        elif alist[mid]<num:
+            low=mid+1
+        else:
+            high=mid-1
+    return None
+result=binary_search(alist,num)
+print("老师给出的书是：",result)
+print("他在列表中的索引是：",mid)
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