需要了解解决方案 [英] Need to understand about a solution

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问题描述

def reverse(文字):

word =

l = len(文字) - 1

而l> = 0 :

word = word + text [l]

l - = 1

返回单词





请帮我理解这个解决方案。什么&它是如何制作的?



我尝试了什么:



def反向(文字):

word =

l = len(文字) - 1

而l> = 0:
word = word + text [l]

l - = 1

返回单词

def reverse(text):
word = ""
l = len(text) - 1
while l >= 0:
word = word + text[l]
l -= 1
return word


please help me to understand about this solution. what & how it was made?

What I have tried:

def reverse(text):
word = ""
l = len(text) - 1
while l >= 0:
word = word + text[l]
l -= 1
return word

推荐答案

这很明显:它所做的只是查找字符串的长度,然后将每个字符附加到从右端开始并且工作到开头的单词。



拿一张纸和一支铅笔,然后亲自按照说明操作 - 你很快就会看到它是如何工作的。
It's pretty obvious: all it does is find out the length of the string, then append each character to the word starting from that the right end and working to the beginning.

Get a piece of paper and a pencil, and try following the instructions yourself - you'll soon see how it works.


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