Commit a5e784a6 by BellCodeEditor

auto save

parent b250abfe
Showing with 60 additions and 2 deletions
# 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] from random import *
\ No newline at end of file b = randint(1,1000000)
l = 1
h = 1000000
while l <= h:
m = (l + h) // 2
if m == b:
print(str(b) + '找到了!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!,' + str(m))
break
elif m > b:
h = m-1
elif m < b:
l = m + 1
else:
print('找不到!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!')
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