save project

my_search.py

@@ -8,19 +8,19 @@ num = random.choice(alist)
 
 def binary_search(alist,num):
     low=0
-    high=len(num_list)-1
+    high=len(alist)-1
     while low <= high:
         mid = (low+high)//2
-        guess_num=num_list[mid]
-        if guess_num==bingo_num:
+        guess_num=alist[mid]
+        if guess_num==num:
             return mid
-        elif guess_num < bingo_num:
+        elif guess_num < num:
             low=mid+1
-        elif guess_num < bingo_num:
-            low=mid-1 
+        elif guess_num > num:
+            high=mid-1 
     return None
 result=binary_search(alist,num)
 print("老师给的数是：",num)
-print("找到了，它在列表里的索引：",mid)
+print("找到了，它在列表里的索引：",result)
         
     
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