版权声明:制作人:流川枫 https://blog.csdn.net/qq_44739706/article/details/89946499
import java.util.*;
public class Xiugaicuow {
/**
*
*/
public static void main(String[] args) {
System.out.println("请输入直角三角形的行数:");
int rows = 0;// 记录三角形行数
Scanner input = new Scanner(System.in);
rows = input.nextInt();
for (int i = 0; i < rows; i++) {
for (int k = 0; k < 4 - i; k++) {
System.out.print(" ");
}
for (int j = 0; j < 2 * i+ 1; j++) {
System.out.print("*");
}
System.out.println();
}
}
}