家庭作业
ackage struct;
public class TestDemo01 {
//打印三角形 五行
public static void main(String[] args) {
for (int i = 0; i <= 5; i++) {
for (int j = 5;j>=i;j--){
System.out.print(" ");
}
for (int j =1;j<=i;j++){
System.out.print(" * ");
}
for (int j =1;j
重点 for包裹循环
