Alphabetize list by using last 3 characters with C#?

Question

I have a list of strings like this:

1. 123.45 ABC
2. 678.90 DEF
3. 543.21 FED

I want to sort the list alphabetically using the last 3 characters of each list element.

EDIT: Using C#, how do I alphabetize this list by using the last 3 characters of each element?

Answer 1

What I would first do is to ensure that I filter out all strings that have less than 3 characters. Then I would order them as:

var items = new List<string> { "13 zzz", "12 yyy", "11 zzz" };

items = items.Where(i => i.Length > 2)
             .OrderBy(i => i.Substring(i.Length - 3))
             .ToList();