// Define what actions to take when the event is raised.
public CustomTimerEventSubscriber(int interval, CustomTimerEventPublisher pub)
{
this.Intervalms = interval;
pub.RaiseCustomEvent += HandleCustomEvent;
}
public static void Main()
{
Console.WriteLine("\n______________ check extending StringBuilder with substring (task 1) ".PadRight(80, '_'));
StringBuilder testStr = new StringBuilder("Freddie Mercury");
Console.WriteLine(testStr);
StringBuilder testSubstr = testStr.Substring(8, 7);
Console.WriteLine(testSubstr);
//===========================================================================
Console.WriteLine("\n______________ check extending IEnumerable<T> (task 2)".PadRight(80, '_'));
int[] testArr = new int[] { 5, 2, 3 };
//double[] testArr = new double[] { 1.5, 2.5, 3.6 };
//char[] testArr = new char[] { 'F', 'r', 'e', 'd', 'd', 'i', 'e' };
Console.WriteLine("array = {0}", string.Join(" ", testArr));
Console.WriteLine("sum = {0}", testArr.SumExt());
Console.WriteLine("product = {0}", testArr.ProductExt());
Console.WriteLine("min = {0}", testArr.MinExt());
Console.WriteLine("max = {0}", testArr.MaxExt());
Console.WriteLine("avg = {0}", testArr.AvgExt());
//===========================================================================
Console.WriteLine("\n______________ check searching/sorting students with LINQ and Lambda (tasks 3-5) ".PadRight(80, '_'));
int ageAdjustment1975 = 40;
Student[] testStudents = new Student[]
{
new Student("Freddie", "Mercury", 68 - ageAdjustment1975),
new Student("Brian", "May", 67 - ageAdjustment1975),
new Student("Roger", "Taylor", 65 - ageAdjustment1975),
new Student("John", "Deacon", 63 - ageAdjustment1975),
new Student("Mike", "Grose", 60 - ageAdjustment1975),
new Student("Barry", "Mitchell", 68 - ageAdjustment1975),
new Student("Doug", "Bogie", 60 - ageAdjustment1975)
};
Console.WriteLine("\n\t Students array:");
for (int i = 0; i < testStudents.Length; i++)
{
Console.WriteLine(testStudents[i]);
}
//===========================================================================
Console.WriteLine("\n\t Students with first names before their last name alphabetically:");
Student[] foundByName = LambdaLINQ.FindByName(testStudents);
for (int i = 0; i < foundByName.Length; i++)
{
Console.WriteLine(foundByName[i]);
}
//===========================================================================
Console.WriteLine("\n\t Students in age range 18-24:");
Student[] foundByAge = LambdaLINQ.FindByAge(testStudents);
for (int i = 0; i < foundByAge.Length; i++)
{
Console.WriteLine(foundByAge[i]);
}
//===========================================================================
Console.WriteLine("\n\t Sorted students in descending order by first name and then last name with Lambda:");
Student[] sortedLambda = LambdaLINQ.SortLambda(testStudents);
for (int i = 0; i < sortedLambda.Length; i++)
{
Console.WriteLine(sortedLambda[i]);
}
//===========================================================================
Console.WriteLine("\n\t Sorted students in descending order by first name and then last name with LINQ:");
Student[] sortedLINQ = LambdaLINQ.SortLinq(testStudents);
for (int i = 0; i < sortedLINQ.Length; i++)
{
Console.WriteLine(sortedLINQ[i]);
}
//===========================================================================
Console.WriteLine("\n______________ check searching int array with LINQ and Lambda (task 6) ".PadRight(80, '_'));
int[] testNums = new int[] { 3, 7, 35, 21, 0, -3, -42 };
Console.WriteLine("numbers = {0}", string.Join(" ", testNums));
int[] numsDiv7and3Lambda = Divisible7and3.Div7and3Lambda(testNums);
Console.WriteLine("numbers divisible by 7 and 3 with Lambda = {0}", string.Join(" ", numsDiv7and3Lambda));
int[] numsDiv7and3LINQ = Divisible7and3.Div7and3Linq(testNums);
Console.WriteLine("numbers divisible by 7 and 3 with LINQ = {0}", string.Join(" ", numsDiv7and3LINQ));
//===========================================================================
Console.WriteLine("\n______________ check custom timer with delegate (task 7) ".PadRight(80, '_'));
CustomTimer ct = new CustomTimer(2, 2, delegate() { Console.WriteLine("Gallileo, Gallileo"); });
ct.ExecuteTimed();
Console.WriteLine("Gallileo Figaro");
Thread.Sleep(2000);
//===========================================================================
Console.WriteLine("\n______________ check custom timer with delegate and events (task 8) ".PadRight(80, '_'));
CustomTimerEventPublisher pub = new CustomTimerEventPublisher();
CustomTimerEventSubscriber sub = new CustomTimerEventSubscriber(2, pub);
pub.ExecuteMethods(2, delegate() { Console.WriteLine("Gallileo, Gallileo"); });
Console.WriteLine("Gallileo Figaro");
//===========================================================================
Console.WriteLine("\n______________ check student class (tasks 9-16, 18, 19) ".PadRight(80, '_'));
testStudents = new Student[]
{
new Student("Freddie", "Mercury", 68 - ageAdjustment1975, "*****@*****.**", new List <int> {
6, 6, 5
}, 800406, "+359283354477", 2),
new Student("Brian", "May", 67 - ageAdjustment1975, "*****@*****.**", new List <int> {
6, 6, 6
}, 800405, "+359283358777", 2),
new Student("Roger", "Taylor", 65 - ageAdjustment1975, "*****@*****.**", new List <int> {
6, 5, 5
}, 800303, "+359883357897", 1),
new Student("John", "Deacon", 63 - ageAdjustment1975, "*****@*****.**", new List <int> {
2, 2, 5
}, 800301, "+359883887966", 2),
new Student("Mike", "Grose", 60 - ageAdjustment1975, "*****@*****.**", new List <int> {
5, 5, 5
}, 800398, "+359283381221", 1),
new Student("Barry", "Mitchell", 68 - ageAdjustment1975, "*****@*****.**", new List <int> {
4, 5, 5
}, 800406, "+359883311256", 1),
new Student("Doug", "Bogie", 60 - ageAdjustment1975, "*****@*****.**", new List <int> {
5, 6, 5
}, 800398, "+359883332665", 2)
};
Console.WriteLine("\n\t Students:");
for (int i = 0; i < testStudents.Length; i++)
{
Console.WriteLine(testStudents[i].ToStringExt());
}
//===========================================================================
Console.WriteLine("\n\t Selected students from group 2, sorted by first name:");
Student[] selectedStudents = (from s in testStudents
where s.GroupNumber == 2
orderby s.FirstName.ToLower()
select s).ToArray();
for (int i = 0; i < selectedStudents.Length; i++)
{
Console.WriteLine(selectedStudents[i].ToStringExt());
}
selectedStudents = testStudents.Where(s => s.GroupNumber == 2)
.OrderBy(s => s.FirstName.ToLower())
.ToArray();
//===========================================================================
Console.WriteLine("\n\t Selected students with email in abv.bg:");
selectedStudents = (from s in testStudents
where s.Email.Split('@')[1].ToLower() == "abv.bg"
select s).ToArray();
for (int i = 0; i < selectedStudents.Length; i++)
{
Console.WriteLine(selectedStudents[i].ToStringExt());
}
//===========================================================================
Console.WriteLine("\n\t Selected students with phones in Sofia:");
selectedStudents = (from s in testStudents
where (s.Tel.Substring(0, 5) == "+3592" || s.Tel.Substring(0, 2) == "02")
select s).ToArray();
for (int i = 0; i < selectedStudents.Length; i++)
{
Console.WriteLine(selectedStudents[i].ToStringExt());
}
//===========================================================================
Console.WriteLine("\n\t Selected students with at least one mark 6:");
selectedStudents = (from s in testStudents
where (s.Marks.Any(m => m == 6))
select s).ToArray();
for (int i = 0; i < selectedStudents.Length; i++)
{
Console.WriteLine(selectedStudents[i].ToStringExt());
}
var excellentStudents = new
{
fullName = (from s in selectedStudents
select(s.FirstName + " " + s.LastName)).ToArray(),
marks = (from s in selectedStudents
select(s.Marks))
.ToArray()
};
//===========================================================================
Console.WriteLine("\n\t Selected students with exactly two marks 2:");
selectedStudents = testStudents.Where(s => s.Marks.Where(m => m == 2).Count() == 2)
.ToArray();
for (int i = 0; i < selectedStudents.Length; i++)
{
Console.WriteLine(selectedStudents[i].ToStringExt());
}
//===========================================================================
Console.WriteLine("\n\t Marks of students who enrolled in 2006:");
int[] marks = testStudents.Where(s => s.FN.ToString()[4] == '0' && s.FN.ToString()[5] == '6')
.Select(s => s.Marks.Select(m => m).ToArray())
.SelectMany(x => x)
.ToArray();
Console.WriteLine(string.Join(" ", marks));
//===========================================================================
Console.WriteLine("\n\t Students separated by group number with LINQ:");
var groupedStudents = from s in testStudents
group s by s.GroupNumber;
foreach (var group in groupedStudents)
{
Console.WriteLine("Group {0}:", group.First().GroupNumber);
foreach (var student in group)
{
Console.WriteLine(student.ToStringExt());
}
}
//===========================================================================
Console.WriteLine("\n\t Students separated by group number with extension methods:");
groupedStudents = testStudents.GroupBy(s => s.GroupNumber);
foreach (var group in groupedStudents)
{
Console.WriteLine("Group {0}:", group.First().GroupNumber);
foreach (var student in group)
{
Console.WriteLine(student.ToStringExt());
}
}
//===========================================================================
var groups = new List <Group>
{
new Group(1, "Physics"),
new Group(2, "Mathematics"),
new Group(3, "Biology"),
new Group(4, "Law")
};
Console.WriteLine("\n\t Departments:");
foreach (var g in groups)
{
Console.WriteLine(g.GroupNumber + " " + g.Department);
}
var mathStudents = (from s in testStudents
join g in groups on s.GroupNumber equals g.GroupNumber
where g.GroupNumber == 2
select new { StudentName = (s.FirstName + " " + s.LastName), Department = g.Department }).ToArray();
Console.WriteLine("\n\t Students from \"Mathematics\" department:");
foreach (var student in mathStudents)
{
Console.WriteLine(student.StudentName + ", " + student.Department);
}
//===========================================================================
Console.WriteLine("\n______________ check sum of infinite convergent series (task 20*) ".PadRight(80, '_'));
EvaluateConvergentSum evaluating = new EvaluateConvergentSum(SumConvergentSeries.EvaluateSum);
Console.WriteLine(String.Format("Sum( 1 / ( 2^n ) = {0:0.00}", evaluating("1 / ( pow(2, x) )")));
Console.WriteLine(String.Format("Sum( 1 / (n + 1)! ) = {0:0.00}", evaluating("1 / ( (x + 1)!)")));
Console.WriteLine(String.Format("1 + Sum( 1 / ( (-1)^n * 2^(n + 1) ) = {0:0.00} (Possibly wrong sign before 1/2? 1/2 - 1/4 + 1/8 - 1/16 + ...)", (1 + evaluating("1 / ( pow( -1, x ) * pow(2, x + 1) )"))));
}
