public static double[][] random( int m, int n )
{
	double[][] matres = new double[m][];
	for ( int i = 0; i < m; ++i )
	{
		matres[i] = new double[n];
		for ( int j = 0; j < n; ++j )
			matres[i][j] = Math.random();
	}
	return(matres);
}