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
 num_9=9
 num_20=20
-num_list = [1, 3, 5, 8, 11, 15, 17, 18, 20, 21]
+low=0
+num_list = [1, 3, 5, 8, 11, 15, 17, 18, 20, 21] 
+high=len(num_list)-1
 while low<=high:
-    mif=(low+high)//2
+    mid=(low+high)//2
     guess_num=num_list[mid]
     if guess_num==num_20:
         print(mid)