Python 代码

class Solution(object):
    def replaceSpaces(self, s):
        """
        :type s: str
        :rtype: str
        """
        s2 = "";

        for i in range (0, len(s)):

            if (s[i]) == " ":
                s2 += "%20"
            else:
                s2 += s[i]

        return s2