public static void Exercise6()
{
EventClass.StringToInt length = new EventClass.StringToInt(EventClass.CountChars);
Console.WriteLine($"Chars in 'Mulle' = {length("Mulle")}");
}
static void Main(string[] args)
{
List <Person> people = GetPeople();
people.ForEach(e => Console.WriteLine(e.ToString()));
/**
* exercise 1
*/
//a:
Console.WriteLine("\n1.a:");
List <Person> belowScore = people.FindAll(e => e.Score <= 2);
belowScore.ForEach(e => Console.WriteLine(e.ToString()));
//b:
Console.WriteLine("\n1.b:");
List <Person> EvenScore = people.FindAll(e => e.Score % 2 == 0);
EvenScore.ForEach(e => Console.WriteLine(e.ToString()));
//c:
Console.WriteLine("\n1.c:");
List <Person> WeightAndScore = people.FindAll(e => e.Score % 2 == 0 && e.Weight > 60);
WeightAndScore.ForEach(e => Console.WriteLine(e.ToString()));
//d:
Console.WriteLine("\n1.d:");
List <Person> weightDiv3 = people.FindAll(e => e.Score % 3 == 0);
weightDiv3.ForEach(e => Console.WriteLine(e.ToString()));
/**
* exercise 2
*/
Console.WriteLine("\n2.a:");
Console.WriteLine($"{people.FindIndex(e => e.Score == 3)}");
Console.WriteLine("\n2.b:");
Console.WriteLine($"{people.FindIndex(e => e.Score == 3 && e.Age<=10)}");
Console.WriteLine("\n2.c:");
Console.WriteLine($"{people.FindAll(e => e.Score == 3 && e.Age <= 10).Count}");
Console.WriteLine("\n2.d:");
Console.WriteLine($"{people.FindIndex(e => e.Score == 3 && e.Age < 8)}");
Console.WriteLine();
//2e:
//If the predicate has no match, then -1 is returned.
//3:
Console.WriteLine("\n3:");
//people.SetAccepted(predicateAsMethod);
people.SetAccepted(p => p.Score >= 6 && p.Age <= 40);
people.ForEach(e => Console.WriteLine($"{e}"));
//4
Console.WriteLine("\n4:");
//Ascending
Console.WriteLine("\nAscending:");
ScoreAgeSortAscending comparerAscending = new ScoreAgeSortAscending();
people.Sort(comparerAscending);
people.ForEach(e => Console.WriteLine($"{e}"));
Console.WriteLine("\n******** Decending ********");
//Decending
ScoreAgeSortDecending comparerDecending = new ScoreAgeSortDecending();
people.Sort(comparerDecending);
people.ForEach(e => Console.WriteLine($"{e}"));
//5
EventClass.StringToInt del = EventClass.CountChars;
//6
Console.WriteLine("\n6:");
Console.WriteLine(del("hejMedDig1"));
Console.WriteLine(del("hejMedDig12"));
Console.WriteLine(del("hejMedDig123"));
//7
Console.WriteLine("\n7:");
Console.WriteLine(EventClass.DelegateUser(del, "hejMedDig1"));
//8
Console.WriteLine("\n8 Ascending:");
//Ascending
var s = from p in people
orderby p.Score, p.Age
select p;
s.ToList().ForEach(e => Console.WriteLine(e.ToString()));
Console.WriteLine("\n8 Decending:");
//Decending
var s2 = from p in people
orderby p.Score descending, p.Age descending
select p;
s2.ToList().ForEach(e => Console.WriteLine(e.ToString()));
//9a
Console.WriteLine("\n9a");
int avgAge = 0;
people.Sort(OwnCompare9a);
people.ForEach(e =>
{
Console.WriteLine($"{e}");
avgAge = e.Age;
}
);
Console.WriteLine($"Average age {avgAge}");
//b
Console.WriteLine("\n9b");
people.Sort(OwnCompare9b);
people.ForEach(e => Console.WriteLine(e));
//10
//10.a
Console.WriteLine("\n10a");
int[] numbers = { 34, 8, 56, 31, 79, 150, 88, 7, 200, 47, 88, 20 };
IEnumerable <int> a = from i in numbers
orderby i
where i >= 10
select i;
a.ToList().ForEach(e => Console.WriteLine(e));
//10.b
Console.WriteLine("\n10b");
IEnumerable <int> b = from i in numbers
orderby i descending
where i >= 10
select i;
b.ToList().ForEach(e => Console.WriteLine(e));
//10.c
Console.WriteLine("\n10c");
IEnumerable <string> c = from i in numbers
where i >= 10
select i + " stuff";
c.ToList().ForEach(e => Console.WriteLine(e));
//10.d
Console.WriteLine("\n10d");
IEnumerable <string> d = from i in numbers
where i >= 10
select i % 2 == 0? i + "even": i + "uneven";
d.ToList().ForEach(e => Console.WriteLine(e));
//10.e
var m = from i in numbers
where i >= 10
select new { Number = i, Even = i % 2 == 0 ? "even" : "uneven" };
m.ToList().ForEach(e => Console.WriteLine(e));
//11
Console.WriteLine("\n11:");
people.Reset();
people.ForEach(e => Console.WriteLine(e));
//12
Random rnd = new Random();
List <int> randInts = new List <int>();
for (int i = 0; i < 100; i++)
{
randInts.Add(rnd.Next(1, 101));
}
//12a
int totalOddNums = randInts.Where(e => e % 2 != 0).Count();
Console.WriteLine($"\n 12a: {totalOddNums}");
//12b
int totalDistincNums = randInts.Distinct().Count();
Console.WriteLine($"\n 12b: {totalDistincNums}");
//12c
Console.WriteLine("\n 12c");
IEnumerable <int> odds = (randInts.Where(e => e % 2 != 0).Select(e => e)).Take(3);
foreach (int i in odds)
{
Console.WriteLine(i);
}
Console.WriteLine("\n 12d:");
//12d
IEnumerable <int> distinctOdds = randInts.Distinct().Where(e => e % 2 != 0).Select(e => e);
foreach (int i in distinctOdds)
{
Console.WriteLine(i);
}
//13
Console.WriteLine("\n 13:");
var peopleFirstLetter = from p in people
group p by p.Name[0] into studentGroup
orderby studentGroup.Key
select studentGroup;
foreach (var v in peopleFirstLetter)
{
Console.WriteLine(v.Key);
foreach (var p in v)
{
Console.WriteLine(p.Name);
}
}
//14
Console.WriteLine("\n14");
List <Person> p1 = GetPeople();
List <Person> p2 = GetPeople2();
var p3 = from person1 in p1
join person2 in p2 on person1.Name equals person2.Name
select new { person2.Name, person1.Age, person2.Weight, person1.Score };
foreach (var p in p3)
{
Console.WriteLine(p);
}
Console.ReadKey();
}
