Commit 883f2876 by BellCodeEditor

save project

parent a68bd8a8
Showing with 18 additions and 2 deletions
......@@ -6,4 +6,20 @@ for i in range(1, 101):
num = random.choice(alist)
# 请完善二分查找函数binary_search(),查找出num在列表alist里面的索引位置
def binary_search(alist,num):
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def binary_search(alist,num):
low=0
high=len(alist)-1
while low<=high:
mid=(low+high)//2
guess=alist[mid]
if guess==alist:
return mid
elif guess_num<bingo_num:
low=mid+1
elif guess_num<bingo_num:
high=-1
return None
result = binary_search(alist,num)
print("老师给的数是:"num)
print("他在列表里的索引是:",result)
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