// Q2
string dept = "Alkalmazott Informatikai Intézet";
int num = people.Count(x => x.Dept == dept);
int current = 0;
int pagesize = 10;
while(current < num)
{
 var q2 = people
     .Where(x => x.Dept == dept)
     .Skip(current)
     .Take(pagesize)
     .Select(person => person.Name);
 q2.ToConsole($"Q2 #{current/pagesize+1}");
 current += pagesize;
}

// Q3
var q3 = from person in people
      let minlen = people.Min(x => x.Name.Length)
      let maxlen = people.Max(x => x.Name.Length)
      where person.Name.Length == minlen ||
      person.Name.Length == maxlen
      select new { person.Name, person.Name.Length };
q3.ToConsole("Q3");

// Q4
//var q4 = from person in people
//         group person by person.Dept into g
//         let count = g.Count()
//         orderby count descending
//         select new { Dept = g.Key, Num = count};
//q4.ToConsole("Q4");