每日一题力扣557

class Solution:
    def reverseWords(self, s: str) -> str:
        a=[]
        s=s.split()
        for i in s:
            if i!=‘‘:
                left=0
                right=len(i)-1
                while left <right:
                    i[left],i[right]=i[right],i[left]#字符串不可以这么改，因为字符串不可变
                    left+=1
                    right-=1
                a.append(i)
                
        return s

class Solution:
    def reverseWords(self, s: str) -> str:
        return ‘ ‘.join(i[::-1] for i in s.split())