Getting highest available number in a List<string>

Question

I have the following strings in a List<string>

vs0, vs1, vs2, vs3, vs4, vs5, ... vs(n)

In my list, they are not sorted and are random. I want to get the string which has the highest int in it. And then get the number out of that string into a int var.

What is the best and fastest way do this?

Answer 1

var max = myList.OrderByDescending(v => int.Parse(v.Substring(2))).First();

或者如果你需要最高的int

var max = myList.Select(v => int.Parse(v.Substring(2))).Max();

Answer 2

 var result = List.Max(p => int.Parse(p.Substring(2)));

Answer 3

How about with LINQ:

List<string> strings = ...
int max = strings.Max(item => int.Parse(item.Substring(2)));

Answer 4

Perhaps just l.Select(Convert.ToInt32).Max() ?

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Per Jim's suggestion, need to strip the 2 leading characters:

l.Max(s => Convert.ToInt32(s.Substring(2)))

(but this one is practically the same as other answers).

Answer 5

var max = yourList.Select(s => int.Parse(s.Substring(2)).Max();

Answer 6

l.Select(s => int.Parse(s.Substring(2))).Max()

如果您计划多次执行此操作，则可能需要创建单独的int列表