How to use string.Endswith to test for multiple endings?

Question

I need to check in string.Endswith(\"\") from any of the following operators: +,-,*,/

If I have 20 operators I don\'t want to use ||<

Answer 1

string s = "Hello World +";
string endChars = "+-*/";

Using a function:

private bool EndsWithAny(string s, params char[] chars)
{
    foreach (char c in chars)
    {
        if (s.EndsWith(c.ToString()))
            return true;
    }
    return false;
}

bool endsWithAny = EndsWithAny(s, endChars.ToCharArray()); //use an array
bool endsWithAny = EndsWithAny(s, '*', '/', '+', '-');     //or this syntax

Using LINQ:

bool endsWithAny = endChars.Contains(s.Last());

Using TrimEnd:

bool endsWithAny = s.TrimEnd(endChars.ToCharArray()).Length < s.Length;
// als possible s.TrimEnd(endChars.ToCharArray()) != s;