public class Demo {
public static void main(String[] args) {
for (int i = 1; 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 < i;j++){
System.out.print("*");
}
System.out.println();
}
}
}
https://www.bilibili.com/video/BV12J41137hu?p=44
打印等腰三角形
唯有努力,人生没有白走的路,每一步都算数