题目描述
请实现一个函数,把字符串 s 中的每个空格替换成"%20"。
示例
示例1
输入:s = “We are happy.”
输出:“We%20are%20happy.”
题解
class Solution {
public:
string replaceSpace(string s) {
string ans;
for (char ch : s) {
if (ch == ' ')
ans += "%20";
else
ans += ch;
}
return ans;
}
};