public bool IsNumber(string s)
{
string checkedInput = s.Trim();
SolutionNK snk = new SolutionNK();
return(snk.isNumeric(checkedInput.ToCharArray()));
}
static void Main(string[] args)
{
SolutionNK s = new SolutionNK();
string inputString = "1";
char[] str = inputString.ToCharArray();
bool result = s.isNumeric(str);
Console.WriteLine(result.ToString());
Solution ss = new Solution();
var r = ss.IsNumber("1");
Console.ReadKey();
}