方法1:庫函數
class Solution {
public String replaceSpace(String s) {
return s.replaceAll(" ", "%20");
}
}
方法2:
class Solution {
public String replaceSpace(String s) {
StringBuilder sb = new StringBuilder();
for (int i = 0; i < s.length(); i++) {
char c = s.charAt(i);
if (c == ' ') {
sb.append("%20");
} else {
sb.append(c);
}
}
return sb.toString();
}
}