//巢狀迴圈正三角列

//巢狀迴圈正三角列
public class NestedForDemo2{
public static void main(String[] args) {
java.util.Scanner scanner = 
new java.util.Scanner(System.in);

System.out.print("輸入層數: ");
int number = scanner.nextInt();

for (int i = 0; i < number; i++ ) {

for(int k=0;k<i+1;k++) 
{ 
System.out.printf("*"); 

} //內層 for

System.out.println(); //換行
} //外層 for
}
}