Java - 백준 코딩테스트 8958번 [1차원 배열 - OX퀴즈]

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.util.StringTokenizer;
 
public class OX {
 
    public static void main(String[] args) throws IOException {
        // 20210622 - 8958번
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        
        StringBuilder sb = new StringBuilder();
        
        int num = Integer.parseInt(br.readLine());
        String arr[] = new String[num];
        
        
        for (int i = 0; i < num; i++) {
            arr[i] = br.readLine();
        }
        
        for(int i = 0; i < arr.length; i++) {
            int count = 0;
            int sum = 0;
            for (int j = 0; j < arr[i].length(); j++) { //각 배열마다 길이가 다름.
                if (arr[i].charAt(j) == 'O') {
                    count++;
                } else { //X가 나오면 0으로 초기화
                    count = 0;
                }
                sum += count;
            }
            sb.append(sum + "\n");
        }
        
        System.out.println(sb);
    }
 
}