compare two numbers stored as strings without converting them to double/int/float

Compare two numbers no convert

// https://stackoverflow.com/a/14468767
var numbers = new string[] {  "100" ,"200", "100.1" , "200.1" };
int N = 100;
var max = numbers.Select(n => n.Split('.'))
                 .OrderByDescending(p => p[0].PadLeft(N,'0'))
                 .ThenByDescending(p => p.Length > 1 ? p[1].PadRight(N, '0') : "")
                 .Select(p => p.Length > 1 ? p[0] + "." + p[1] : p[0])
                 .First();