Splitting string into words length-based lists c#

Question

I have a string of words separated by spaces. How to split the string into lists of words based on the words length?

Example

inpu

Answer 1

You can use Linq GroupBy

edit Now I applied Linq to generate the string list you wanted for output.

edit2 applied multiple input, single output as in edited question. It is just a Distinct call in Linq

string input = " aa aaa aaaa bb bbb bbbb cc ccc cccc ";

var list = input.Split(' ');

var grouped = list.GroupBy(s => s.Length);

foreach (var elem in grouped)
{
    string header = "List " + elem.Key + ": ";
    // var line = elem.Aggregate((workingSentence, next) => next + ", " + workingSentence);

    // if you want single items, use this
    var line = elem.Distinct().Aggregate((workingSentence, next) => next + ", " + workingSentence);
    string full = header + " " + line;
    Console.WriteLine(full);
}


// output: please note the last blank in the input string! this generates the 0 list
List 0:  ,
List 2:  cc, bb, aa
List 3:  ccc, bbb, aaa
List 4:  cccc, bbbb, aaaa