反转字符串

#字符串反转
#解法一
def spin_words(words):

    #切割为每个单词
    words_list=words.split()   #返回的是字符串列表
    return ' '.join(w[::-1] if len(w)>=5 else w for w in words_list)
    

spin_words('this is a test hey fellow warriors')

#解法二
def spin_words(string):
    string=string.split()
    for i,s in enumerate(string):
        if len(s)>=5:
            string[i]=string[i][::-1]
    return ' '.join(string)

spin_words('this is a test hey fellow warriors')

#字符串反转
#解法三
def spin_words(words):
    res=[]
    for w in words.split():
        if len(w)>=5:
            res.append(w[::-1])
        else:
            res.append(w)            
    return res
        
spin_words('this is a test hey fellow warriors')