题解 | #字符串变形#

#
# 代码中的类名、方法名、参数名已经指定，请勿修改，直接返回方法规定的值即可
#
# 
# @param s string字符串 
# @param n int整型 
# @return string字符串
#
class Solution:
    def trans(self , s: str, n: int) -> str:
        # write code here
        new_words = []
        words = s.split(' ')
        for word in words:
            new_word = ''
            for i in range(len(word)):
                ch = word[i]
                if ch.lower() == ch:
                    new_word += ch.upper()
                else:
                    new_word += ch.lower()
            new_words.append(new_word)
        return ' '.join(new_words[::-1])