Question

java输出二维数组数字金字塔

Answer 1

public static void main(String[] args) {
String n = JOptionPane.showInputDialog("请输入一个数字："雹中州);// 直源蔽接输入行号
int l = Integer.parseInt(n);
int k = l;
for (int i = 1; i <= k; i++) {
for (int j = 1; j <= l; j++)
System.out.print(" ");
l--;
for (int j = 1; j <= i*2-1; j++) {
System.out.print("*"培扒);// 显示星星
}
System.out.println();
}
}