题解 | #单词倒排#
单词倒排
https://www.nowcoder.com/practice/81544a4989df4109b33c2d65037c5836
import re
# a = input()
# list_A = list('ABCDEFGHIJKLMNOPQRSTUVWXYZ')
# list_A.extend([ _.lower() for _ in list_A])
# str_ = ''.join(list_A)
# # print(str_)
# # 切分
# for i in a:
# if i not in str_:
# a = a.replace(i,' ')
# # print(a)
a = re.sub('[^A-Za-z]',' ',input()) # 用正则把非字母数字下划线 变空格。
a = a.strip(' ').split(' ')
# print(a)
result = []
for i in range(len(a)-1,-1,-1):
result.append(a[i])
print(' '.join(result))
