public class Exam { public static void main(String[] args) { int a[][] = {{45, 50, 55}, {89}}; System.out.println(a[0].length); System.out.println(a[1].length); System.out.println(a[0][0]); System.out.println(a[0][1]); System.out.println(a[1][0]); } } 💡 정답 3 1 45 50 89