/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		Random gera = new Random();
		int linha = 2;
		int coluna = 42;
		int[][] numAle = new int [linha][coluna];       
		ArrayList<Integer> num = new ArrayList<>(linha * coluna);
 
		for(int j = 0; j < (linha * coluna); j++)
		{            
			num.add(j);
		}
 
		for (int i = 0 ; i < numAle.length ; i++)
		{
			for (int j = 0 ; j<numAle[i].length ; j++)
			{
				int index = gera.nextInt(num.size()); 
				numAle[i][j] = num.get(index);                
				num.remove(index);                
			}                
		}        
 
		System.out.println ("            Imprimindo resultados");             
		System.out.println ("=============================================="); 
 
 
		for (int i = 0 ; i < numAle.length ; i++)
		{
			for (int j = 0 ; j < numAle[i].length ; j++)
			{
			   System.out.printf("%2d ", numAle[i][j]);               
 
			}                
			System.out.println ("");
		}
	}
}

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