5. 替换空格 (replaceSpace)
1. python
class Solution:
def replaceSpace(self, s: str) -> str:
lst=[]
for c in s:
if c == " ":lst.append("%20")
else: lst.append(c)
return "".join(lst)
2. Java
class Solution {
public String replaceSpace(String s) {
StringBuilder ret = new StringBuilder();
for(Character c :s.toCharArray()){
if(c == ' '){
ret.append("%20");
}else{
ret.append(c);
}
}
return ret.toString();
}
}