Python如何反转字符串

>>> s="abcdef">>> result = s[::-1]>>> print(result)

fedcba

l = list(s)l.reverse()result = "".join(l)

l = list(s)result = "".join(l[::-1])

result = reduce(lambda x,y:y+x,s)

def func(s):    if len(s) <1:        return s    return func(s[1:])+s[0]result = func(s)

def func(s):    l = list(s) #模拟全部入栈    result = ""    while len(l)>0:        result += l.pop() #模拟出栈    return resultresult = func(s)

def func(s):    result = ""    max_index = len(s)-1    for index,value in enumerate(s):        result += s[max_index-index]    return resultresult = func(s)