[2675]문자열 - 문자열 반복

문제

 

코드

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringBuilder sb = new StringBuilder();

        int t = Integer.parseInt(br.readLine());

        for (int i = 0; i < t; i++) {
            String[] str = br.readLine().split(" ");

            int r = Integer.parseInt(str[0]);
            for (byte val : str[1].getBytes()) {
                for (int j = 0; j < r; j++) {
                    sb.append((char) val);
                }
            }
            sb.append('\n');
        }
        System.out.println(sb);
    }
}