Question

I have a dictionary with this signature:

Dictionary<decimal, int>

Items inside it look like this:

90, 2
60, 3
30, 4
20, 1

I need to blow this out to a list that has this signature:

List<double>

Items inside would look like this:

90
90
60
60
60
30
30
30
30
20

Any ideas on how to do this in an elegant and efficient way?

Answer 1

Try the following

dictionary
  .SelectMany(pair => Enumerable.Repeat((double)pair.Key, pair.Value))
  .OrderByDescending(x => x)
  .ToList();