public static void Main() {
int[][] testMatrix = {
new[] {21, 24, 3, 0},
new[] {-1, 23, 0, 11},
new[] {-20, 90, 21, 2}
};
var matrix = new Matrix(testMatrix);
matrix.Sort();
matrix.GetNotNullColumns();
var testArray = new double[] { 10, -2, -23, 23, 23, -2, 3, -2, 222 };
Arrays.SumPositiveElements(testArray);
Arrays.MultiplyMinMaxRange(testArray);
Arrays.SortDesc(testArray);
var strings = new Strings(Console.ReadLine());
strings.IsParenthesesConcur();
strings.PrintLongestWord();
strings.RemoveLatinWords();
Console.Read();
}