[백준] - 단계별로 풀어보기(문자열) 2675

백준 2675번

문자열 반복

문제 출처 https://www.acmicpc.net/problem/2675

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내가 작성한 코드

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 Main {

	public static void main(String[] args) throws IOException{
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
		int n = Integer.parseInt(br.readLine());
		
		for(int i=0; i<n; i++) {
			StringTokenizer st = new StringTokenizer(br.readLine());
			int co = Integer.parseInt(st.nextToken()); //첫번째 토큰에 반복의 수
			String s = st.nextToken(); //두번째 토큰에 문자열
			
			for(int j=0; j<s.length(); j++) {
				char ch = s.charAt(j);
				for(int z=0; z<co; z++) {
					bw.write(ch);
				}	
			}
			bw.newLine(); //한줄 건너뛰기
		}
		bw.flush();
		bw.close();
	}
}