풀이
class Solution {
public String solution(String s) {
String answer = "";
if (s.length()%2==0)
{
answer = s.substring(s.length()/2-1, s.length()/2+1);
}
else
{
answer = s.substring(s.length()/2,s.length()/2+1);
}
return answer;
}
}