별 순차

import java.io.*;
import java.util.*;

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 cnt = Integer.parseInt(br.readLine());
		for(int i=1; i<=cnt; i++){
			for(int j=1; j<=i; j++){
				bw.write("*");
			}
			bw.write("\n");
		}
		bw.flush();//남아있는 데이터를 모두 출력시킴
		bw.close();//스트림을 닫음
	}
}

별 우측정렬

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

		for(int i=0; i<cnt; i++){
			for(int j=1; j<(cnt-i); j++){
				bw.write(" ");
			}
			for(int j=0; j<=i; j++) {
				bw.write("*");
			}
			bw.newLine();
		}
		bw.flush();//남아있는 데이터를 모두 출력시킴
		bw.close();//스트림을 닫음
	}
}

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