我将如何单独反转每个单词而不是整个字符串

Question

我正在尝试单独反转字符串中的单词，因此单词仍然按顺序排列，但只是反转，例如 "hi my name is" 输出 "ih ym eman si" 但是整个字符串被翻转

    r = 0
    def readReverse(): #creates the function
        start = default_timer() #initiates a timer
        r = len(n.split()) #n is the users input
        if len(n) == 0:
            return n
        else:
            return n[0] + readReverse(n[::-1])
            duration = default_timer() - start
            print(str(r) + " with a runtime of " + str(duration))

    print(readReverse(n))

Answer 1

首先用正则表达式将字符串拆分成单词、标点和空格similar to this。然后你可以使用生成器表达式单独反转每个单词，最后将它们与 str.join.

连接在一起

import re


text = "Hello, I'm a string!"
split_text = re.findall(r"[\w']+|[^\w]", text)

reversed_text = ''.join(word[::-1] for word in split_text)
print(reversed_text)

输出：

olleH, m'I a gnirts!

如果你想忽略标点符号，你可以省略正则表达式，只拆分字符串：

text = "Hello, I'm a string!"

reversed_text = ' '.join(word[::-1] for word in text.split())

但是，逗号、感叹号等将成为单词的一部分。

,olleH m'I a !gnirts

这是递归版本：

def read_reverse(text):
    idx = text.find(' ')  # Find index of next space character.
    if idx == -1:  # No more spaces left.
        return text[::-1]
    else:  # Split off the first word and reverse it and recurse.
        return text[:idx][::-1] + ' ' + read_reverse(text[idx+1:])

我将如何单独反转每个单词而不是整个字符串

How would I reverse each word individually rather than the whole string as a whole

reverse

python-3.x