import java.util.Arrays;
import java.util.Random;
import java.util.stream.Collectors;

public class MD2 {

    public static void main(String[] args) {

        int specMas[][] = new int[7][7];
        Random rand = new Random();
        int i, j;

        for(j = 6; j > -1; j--) {

            for(i = 6; i > 5-j; i--) {

            specMas[i][j] = rand.nextInt(-100, 101);


            }
        }

        for (i=0; i<7; i++) {
            for (j=0; j<7; j++)
                System.out.print(specMas[i][j] + "\t");
            System.out.println();
        }


        int k = 0;
        Integer[] array = new Integer[specMas.length * specMas.length];

        for (i = 0; i < specMas.length; i++) {
            for (j = 0; j < specMas[i].length; j++) {
                array[k++] = specMas[i][j];
            }
        }
        Integer[] result = Arrays.stream(array)
                .filter(o -> o != 0).collect(Collectors.toList()).toArray(Integer[]::new);

        System.out.println(result);

    }
}