参考解析
class Solution:def reverseWords(self, s: str) -> str:s = s.strip() # 删除首尾空格i = j = len(s) - 1res = []while i >= 0:while i >= 0 and s[i] != ' ': i -= 1 # 搜索首个空格res.append(s[i + 1: j + 1]) # 添加单词while s[i] == ' ': i -= 1 # 跳过单词间空格j = i # j 指向下个单词的尾字符return ' '.join(res) # 拼接并返回
