public class
Ikk1 {
public
static
void
main ( String[] args ) {
// 4回繰り返し
for
( int i = 0; i < 4; i++ ) {
// [i+1]回繰り返し
for ( int j = 0;
j < ( i + 1 ); j++ ) {
System.out.print( "*" );
}
System.out.println();
}
}
}