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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 = [ 3, 7, 8, 11, 14,15, 17, 18, 20, 25]
 low=0
 low=0
 high=len(num_list)-1
 high=len(num_list)-1
-num=9
+num=7
 while low<high:
 while low<high:
     mid=(low+high)//2
     mid=(low+high)//2
     guess=num_list[mid]
     guess=num_list[mid]