day21(打印三角形)
package com.kuang.struct;
public class TestDemo01 {
public static void main(String[] args) {
//打印三角形 5行
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();
}
}
}