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
        

        L=s.split(" ")
        L=L[::-1]
        L3=[]
        for x in L:
            res=''
            for y in x:
                if y.isupper():
                    y=y.lower()
                    res+=y
                
                elif y.islower():
                    y=y.upper()
                    res+=y
                else:
                    res+=y

            L3.append(res)
        res =" ".join(L3)
        return res