题目
请实现一个函数，把字符串 s 中的每个空格替换成"%20"。
示例 1：
输入：s = "We are happy."
输出："We%20are%20happy."
限制：
0 <= s 的长度 <= 10000
解题思路
class Solution:
def replaceSpace(self, s: str) -> str:
# 简单做法
return s.replace(" ", "%20")
# # 正规做法
# newS = ""
# for i in s :
# if i != " ":
# newS += i
# else:
# newS += "%20"
# return newS
if __name__ == '__main__':
s = "We are happy."
result = Solution().replaceSpace(s)
print(result)
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