가운데 글자 가져오기

https://school.programmers.co.kr/learn/courses/30/lessons/12903/solution_groups?language=java 

프로그래머스

substring으로 문자열 자르는거 잘 익혀두자

import java.util.*;

public 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;
    }

    public static void main(String[] args) {
        Solution T = new Solution();
        Scanner in = new Scanner(System.in);
        String s = in.nextLine();

        System.out.println(T.solution(s));
    }
}