백준 2741 N찍기 자바

# 2741 N 찍기 자바

• Scanner 보다 BufferedReader, BufferedWriter를 사용하는게 효율적이다.

import java.io.*;

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 num = Integer.parseInt(br.readLine());

    for ( int i = 1; i <= num; i++ ) {
      bw.write((i) + "\n");
    }

    bw.flush();
    bw.close();

  }
}