牛客-剑指0ffer-替换空格

题目描述
请实现一个函数，将一个字符串中的每个空格替换成“%20”。例如，当字符串为We Are Happy.则经过替换之后的字符串为We%20Are%20Happy。

# -*- coding:utf-8 -*-
class Solution:
    # s 源字符串
    def replaceSpace(self, s):
        # write code here
        result = ""
        temp = s.split(" ")
        for i in temp:
            result += (i + "%20")
        
        return result[:-3]