Study Plan For Algorithms - Part34
1. 翻转单词顺序
输入一个英文句子，翻转句子中单词的顺序，但单词内字符的顺序不变。
方法一：
def reverseWords(s):
s = s.strip()
i = len(s) - 1
j = i
res = []
while i >= 0:
while i >= 0 and s[i]!= " ":
i -= 1
res.append(s[i + 1:j + 1] + " ")
while i >= 0 and s[i] == " ":
i -= 1
j = i
return "".join(res).strip()
方法二：
def reverseWords(s):
words = s.split()
reversed_words = words[::-1]
return " ".join(reversed_words)
方法三：
def reverseWords(s):
parts = []
word = ""
for char in s:
if char == " ":
if word:
parts.append(word)
word = ""
else:
word += char
if word:
parts.append(word)
return " ".join(reversed(parts))
原文地址：https://blog.csdn.net/qq_24058289/article/details/142373367
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