백준 2742 / Java
2022. 6. 30. 00:46ㆍAlgorithm
<BufferedReader 버전>
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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 bf = new BufferedReader(new InputStreamReader(System.in));
BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
int N = Integer.parseInt(bf.readLine());
for(int i=N ; i>0 ; i--) {
bw.write(i+"\n");
}
bw.flush();
bw.close();
}
}
|
cs |

<Scanner 버전>
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import java.util.Scanner;
public class Main{
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
int N = in.nextInt();
for(int i=N; i>0 ; i--) {
System.out.println(i);
}
in.close();
}
}
|
cs |
Scanner로 했을 때 보다 BufferedReader로 했을때 메모리와 시간 둘 다 절약 되었다. 호...
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