***
***
***
for(int i = 0; i < 3; i++)
{
for(int j = 0; j < 3; j++)
{
System.out.print("*");
}
System.out.println();
}
2. 입력을 받아서 찍기.
******
*
*
*
Scanner scanner = new Scanner(System.in);
int num = scanner.nextInt();
for(int i = 0; i < num; i++)
{
for(int j = 0; j < num; j++)
{
System.out.print("*");
}
System.out.println();
}
3.
*
**
***
Scanner scanner = new Scanner(System.in);
int num = scanner.nextInt();
for(int i = 0; i < num; i++)
{
for(int j = 0; j <=i; j++)
{
System.out.print("*");
}
System.out.println();
}
4.
*
**
***
Scanner scanner = new Scanner(System.in);
int num=scanner.nextInt();
for(int i = 0; i < num; i++)
{
for(int j = i; j<num-1; j++ )
{
System.out.print(" ");
}
for(int j = 0; j <= i; j++)
{
System.out.print("*");
}
System.out.println();
}
5.
*
***
*****
Scanner scanner = new Scanner(System.in);
int num=scanner.nextInt();
for(int i = 0; i < num; i++)
{
for(int j = i; j<num-1; j++ )
{
System.out.print(" ");
}
for(int j = 0; j < (i*2)+1; j++)
{
System.out.print("*");
}
System.out.println();
}
