using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
public class MainClass {
public static void Main() {
string[] words = { "b", "c", "a", "ba", "ae", "ch" };
var wordGroups =
from w in words
group w by w[0] into g
select new { FirstLetter = g.Key, Words = g };
foreach (var g in wordGroups) {
Console.WriteLine("Words that start with the letter '{0}':", g.FirstLetter);
foreach (var w in g.Words) {
Console.WriteLine(w);
}
}
}
}