2741번

n찍기 백준 알고리즘 문제가 자바 복습하기 정말 좋은거 같다.

코드

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

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 t = Integer.parseInt(br.readLine());
		
		for(int i = 1 ; i <= t ; i++) {
			bw.write( i + "\n");
		}
		bw.flush();		
		bw.close();
		br.close();
	}
}

2742번

코드

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

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 t = Integer.parseInt(br.readLine());
		
		for(int i = t ;  i >= 1 ; i--) {
			bw.write( i + "\n");
		}
		bw.flush();		
		bw.close();
		br.close();
	}
}