java 打印一个直角三角形

/**
 * *
 * **
 * ***
 * ****
 * *****
 */
public class Demo {

	public static void main(String[] args) {
		for (int i = 0; i < 5; i++) {

			for (int j = 0; j < i+1; j++) {
				System.out.print("*");
			}
			System.out.println();


		}
	}
}