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。
思路:
先把字符串转成list,然后对list遍历,如果s[i]=’ ‘则插入’%20’
# -*- coding:utf-8 -*-
class Solution:
# s 源字符串
def replaceSpace(self, s):
# write code here
s = list(s)
l = len(s)
for i in range(l):
if s[i]==' ':
s[i]='%20'
return ''.join(s)