题解 | #单词倒排#
单词倒排
http://www.nowcoder.com/practice/81544a4989df4109b33c2d65037c5836
while True:
try:
s0 = input()
#非字母元素一律替换为空格，并按空格切片
for i in range(len(s0)):
if not s0[i].isalpha():
s0=s0.replace(s0[i], ' ')
s1 = s0.split(' ')
#倒序，将非空元素加入新列表
s1.reverse()
s2 = []
for i in s1:
if i != '':
s2.append(i)
#列表转字符串
s3 = ' '.join(s2)
print(s3)
except:
break
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