save project

binary_search.py

 # 使用二分查找法，找出9和20在列表里面的索引
 # 使用二分查找法，找出9和20在列表里面的索引
-num_list = [1, 3, 5, 8, 11, 15, 17, 18, 20, 21]
+num_list= [1, 3, 5, 8, 11, 15, 17, 18, 20, 21]
 num=20
 num=20
 low=0
 low=0
 high=len(num_list)-1
 high=len(num_list)-1
 while low<=high:
 while low<=high:
     mid=(high+low)//2
     mid=(high+low)//2
-    guess=num_list(mid)
+    guess=num_list[mid]
     if guess==num:
     if guess==num:
         print(mid)
         print(mid)
         break
         break
     elif guess<num:
     elif guess<num:
-        high=mid-1
+        low=mid+1
     else:
     else:
-        low=mid+1
+        high=mid-1
\ No newline at end of file