【剑指offer】面试题05：替换空格

05. 替换空格 请实现一个函数，把字符串 s 中的每一个空格替换成"%20"。web 输入：s = "We are happy." 输出："We%20are%20happy." class Solution { public: string replaceSpace(string s) { int len1 = s.length() - 1; for(in

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