private static Tuple <string, decimal> GetNewPurchaseInfo()
{
bool isInputValid;
string purchaseName;
decimal purchasePrice;
do
{
CH.WriteSeparator();
purchaseName = CH.GetStringFromConsole("Please input the purchase name [Butter/Wine/Caviar/ e.t.c.]");
var purchasePriseStr =
CH.GetStringFromConsole($"Please input the purchase price [{0.5m:C}/{9.99m:C}/ e.t.c.]");
var isValidPurchaseName = !string.IsNullOrWhiteSpace(purchaseName);
var isValidPurchasePrice = decimal.TryParse(purchasePriseStr, out purchasePrice);
isInputValid = isValidPurchaseName && isValidPurchasePrice;
if (!isInputValid)
{
Console.WriteLine("Incorrect input. Try again.");
}
} while (!isInputValid);
return(new Tuple <string, decimal>(purchaseName, purchasePrice));
}
public void CheckLections()
{
foreach (var lectionPair in Lections)
{
var lection = lectionPair.Key;
CH.WriteSeparator();
Console.WriteLine(LectionTemplateString, lection.Type, lection.Theme, lection.Classroom);
CH.WriteSeparator();
var humansOnLection = lectionPair.Value;
foreach (var human in humansOnLection)
{
switch (human)
{
case Student student:
student.Learn(lection.Type);
break;
case Lecturrer lecturrer:
lecturrer.Work(lection.Type);
break;
default:
Console.Write($"{human} is eating. ");
human.Eat();
break;
}
}
}
}
private static void WritePurchasesListToConsole(Dictionary <string, decimal> purchasesList, bool isPriceVisible,
int filterDirection, decimal filterValue)
{
const string captionStr = "Shopping List";
const string filtrStr = "Filter applied to the list. Items with a price {0} than {1,25:C} are displayed.";
const string listStrWithPrice = "|{0,25}|{1,15:C}|";
const string listStrWithoutPrice = "|{0,25}|";
Console.WriteLine(captionStr);
CH.WriteSeparator();
if (filterDirection != 0)
{
Console.WriteLine(filtrStr, filterDirection == 2 ? "higher" : "lower", filterValue);
CH.WriteSeparator();
}
Console.WriteLine(isPriceVisible ? listStrWithPrice : listStrWithoutPrice, "Purchase name", "Price");
foreach (var keyValuePair in purchasesList)
{
switch (filterDirection)
{
case 1 when keyValuePair.Value > filterValue:
case 2 when keyValuePair.Value < filterValue:
continue;
}
Console.WriteLine(isPriceVisible ? listStrWithPrice : listStrWithoutPrice, keyValuePair.Key,
keyValuePair.Value);
}
Console.WriteLine(Environment.NewLine);
}
public void Predict()
{
CH.WriteSeparator();
Console.WriteLine("Please choice prediction interval: ");
var choiceResult = CH.GetChoiceFromUser <Period>(true);
CH.ClearLine(2);
Console.WriteLine(Predict(choiceResult));
}
private static void Main(string[] args)
{
CH.SetConsoleOutputEncoding();
CH.SetConsoleColor();
const string inputMsg = "Введитк натуральное число (n>0) : ";
const string noPrimeMsg = "Нет простых чисел в выбранном диапазоне";
const string invalidInputMsg = "Введены неверные значения...";
const string outMsg = "{0,10}";
var inputString = CH.GetStringFromConsole(inputMsg);
if (!uint.TryParse(inputString, out var n))
{
Console.WriteLine(invalidInputMsg);
Console.ReadKey();
return;
}
CH.WriteSeparator();
if (n == 1)
{
Console.WriteLine(noPrimeMsg);
}
else if (n >= 2)
{
Console.Write(outMsg, 2);
for (uint number = 2; number <= n; number++)
{
var isPrime = false;
for (uint oldNumber = 2; oldNumber <= Math.Ceiling(Math.Sqrt(number)); ++oldNumber)
{
if (number % oldNumber != 0)
{
isPrime = true;
break;
}
}
if (isPrime)
{
Console.Write(outMsg, number);
}
}
}
Console.WriteLine();
CH.WriteSeparator();
//exit
Console.ReadKey();
}
private void WriteFieldStatus()
{
CH.WriteSeparator();
Console.WriteLine(
$"On field:\n -Grass count {_grassCount}\n -Rabbits count: {_rabbits.Count}\n -Tigers count: {_tigers.Count}");
if (_rabbits.Count == 0 && _tigers.Count == 0)
{
Console.WriteLine("\tAll dead");
}
}
private static void Main(string[] args)
{
CH.SetConsoleOutputEncoding();
CH.SetConsoleColor();
var students = new List <Student>
{
new Student("Abdul", "Student 1", "Departament 1", 1, "G1"),
new Student("Vdul", "Student 2", "Departament -2", 1, "G2"),
new Student("Opozdal", "Student 3", "Departament 3", 1, "G3"),
new Student("Umni", "Student 4", "Departament 666", 1, "G666"),
new Student("Knyzz", "From last table", "Departament 666", 1, "G666") //4
};
var lecturers = new List <Lecturer>
{
new Lecturer("Uchit", " Chemuto", "Gdeto", "O chomto"),
new Lecturer("NE Uchit", " Chemuto", "TamTO", "Ni o chom")
};
var heads = new List <HeadLecturrer>
{
new HeadLecturrer("Zloy", "Dulahan", "Hell", 666)
};
var univarcity = new University();
foreach (var student in students)
{
univarcity.UnivrsityHumans.Add(student);
}
foreach (var lecturer in lecturers)
{
univarcity.UnivrsityHumans.Add(lecturer);
}
foreach (var head in heads)
{
univarcity.UnivrsityHumans.Add(head);
}
CH.WriteSeparator();
univarcity.UnivrsityHumans.Add(students[4]); //there must be error in log
CH.WriteSeparator();
CH.WriteSeparator();
univarcity.UniversityWork();
Console.ReadKey();
}
private static void Main(string[] args)
{
CH.SetConsoleColor();
CH.SetConsoleOutputEncoding();
TaskOne();
CH.WriteSeparator();
CH.WriteSeparator();
TaskTwo();
CH.WriteSeparator();
CH.WriteSeparator();
TaskThree();
Console.ReadKey();
}
private static void Main(string[] args)
{
CH.SetConsoleOutputEncoding();
CH.SetConsoleColor();
//output caption
CH.WriteSeparator();
Console.WriteLine("\t\t\t\t\t\t- Sphere Calculator -");
CH.WriteSeparator();
Console.WriteLine("\t\t\t\t\t\t-= Basic Formulas =-");
Console.WriteLine("\t\t\t\t\tVolume=(4/3)\u03C0R\u00B3 m\u00B3 & Area = 4\u03C0R\u00B2 m\u00B2");
//input radius of sphere
CH.WriteSeparator();
var separator = CultureInfo.CurrentCulture.NumberFormat.NumberDecimalSeparator;
double sphereRadius;
string sphereRadiusString;
do
{
sphereRadiusString = CH.GetStringFromConsole(
$"Please enter the radius (R) of your sphere in meters (m) [you must separate of number parts with \"{separator}\" char]");
} while (!double.TryParse(sphereRadiusString, out sphereRadius));
//convertation & calculations
var sphereV = 4.0 / 3.0 * Math.PI * Math.Pow(sphereRadius, 3.0);
var sphereA = 4.0 * Math.PI * Math.Pow(sphereRadius, 2.0);
//output results
Console.ForegroundColor = ConsoleColor.DarkGreen;
CH.WriteSeparator();
Console.ForegroundColor = ConsoleColor.White;
Console.WriteLine(
"\tVolume=(4/3)\u03C0R\u00B3={0:0.###} m\u00B3{1}\tArea=(4/3)\u03C0R\u00B3={2:0.###} m\u00B2", sphereV,
Environment.NewLine, sphereA);
Console.ForegroundColor = ConsoleColor.DarkGreen;
CH.WriteSeparator();
Console.WriteLine(
$"\tThank you for using our program, we hope it helped you :D {Environment.NewLine}\tGoodbye!");
//exit
Console.ReadKey();
}
private static decimal GetPriceFilterValue()
{
bool isInputValid;
decimal priceFilterValue;
do
{
CH.WriteSeparator();
var priceFilterValueStr = CH.GetStringFromConsole($"filter value [{0.5m:C}/{9.99m:C}]");
isInputValid = decimal.TryParse(priceFilterValueStr, out priceFilterValue);
} while (!isInputValid);
return(priceFilterValue);
}
TaskOne()
{
// TODO Задача 1 Делегаты и методы
/*
* 1. Объявить делегат для работы с выборками.
* 2. Создать метод, в классе каталог, позволяющий делать выборки из каталога.
* 3. Создать класс BookSorter и объявить в нём методы необходимые для
* выполнения задач по сортировке книг
* 3. Вывести в консоль книги написанные до 85ого года. Передав статический метод и BookSorter-a
* 4. Вывести книги написаны в названии которых есть слово "мир"
*/
var catalog = new Catalog
{
Books = new List <Book>
{
new Book {
Title = "Book 1 About eat", DoP = new DateTime(1984, 1, 1)
},
new Book {
Title = "Book 2 About our little world", DoP = new DateTime(1983, 1, 1)
},
new Book {
Title = "Book 3 About cars", DoP = new DateTime(1988, 1, 1)
},
new Book {
Title = "Book 4 Around the world in One tick", DoP = new DateTime(1999, 1, 1)
}
}
};
var booksBefore85Year = catalog.SelectBooks(BookSorter.IsBookBefore85Year);
foreach (var book in booksBefore85Year)
{
Console.WriteLine(book);
}
CH.WriteSeparator();
var booksWithWordWorld = catalog.SelectBooks(BookSorter.IsContainsWordWoldInTitle);
foreach (var book in booksWithWordWorld)
{
Console.WriteLine(book);
}
}
private static void TaskTwo()
{
// TODO Задача 2 Делегаты и анонимные методы и/или лямбда выражения
/*
* 1. Объявить делегаты для работы со студентами
* 2. Создать метод, в классе группа, позволяющий сортировать студентов.
* 3. Создать метод, в классе группа, предоставляющий возможность выполнить действие
* с приватной коллекцией студентов.
* 4. Используя метод из пункта 2, отсортировать студентов по средней оценке
* 5. Используя метод из пункта 3, всем студентам с оценкой от 4 до 6 добавить 1 балл.
*/
const string studentTemplate = "{0} {1} - Avg mark: {2}";
var group = new Group(new[]
{
new Student(),
new Student(),
new Student(),
new Student(),
new Student(),
new Student(),
new Student()
});
group.Sort((student1, student2) => (int)(student1.AvgMark - student2.AvgMark));
group.DoSomethingWith(
student => true,
student => Console.WriteLine(studentTemplate, student.FirstName, student.LastName, student.AvgMark));
CH.WriteSeparator();
group.DoSomethingWith(
student => student.AvgMark >= 4 && student.AvgMark <= 6,
student =>
{
Console.Write(studentTemplate, student.FirstName, student.LastName, student.AvgMark);
student.AddToMark(1);
Console.Write(" -> ");
Console.WriteLine(studentTemplate, student.FirstName, student.LastName, student.AvgMark);
});
}
private static void Main(string[] args)
{
CH.SetConsoleColor();
CH.SetConsoleOutputEncoding();
var tracks = new List <Track>
{
new Track("SomeFilePath0", "Track #0", "Some Band", new TimeSpan(1, 0, 0, 0)),
new Track("SomeFilePath0", "Track #1", "Some Band", new TimeSpan(0, 1, 0, 0)),
new Track("SomeFilePath0", "Track #2", "Some Band", new TimeSpan(0, 0, 1, 0)),
new Track("SomeFilePath0", "Track #3", "Some Band", new TimeSpan(0, 0, 0, 1))
};
var labum = new Album("Album which will be serialized", new LinkedList <Track>(tracks));
IAlbumSerializer serializer = new BinaryAlbumSerializer(MusicLibraryDir);
Console.WriteLine("Saving into file:");
var filePath = serializer.SaveToFile(labum);
Console.WriteLine($"Labum was successfully saved. FilePath: {filePath}");
CH.WriteSeparator();
Console.ReadKey();
Console.WriteLine("Loading from file:");
var labumFromFile = serializer.LoadFromFile(filePath);
CheckAlbum(labumFromFile);
CH.WriteSeparator();
Console.ReadKey();
Console.WriteLine("Loading from BinaryArray:");
var buffer = File.ReadAllBytes(filePath);
var labumFromBinaryArray = serializer.LoadFromBinaryArray(buffer);
CheckAlbum(labumFromBinaryArray);
CH.WriteSeparator();
Console.ReadKey();
}
private static void Main(string[] args)
{
CH.SetConsoleOutputEncoding();
CH.SetConsoleColor();
const int numberOfPeriods = 12;
const string inputMsg1 = "Введите cумму кредитования, \u00A4";
const string inputMsg2 = "Введите ставку кредитования, % [1 - 100% как 15,5% ]";
const string paymentTypeMsg = "Выберите вид платежа:";
const string paymentTypeMsg1 =
"1 - аннуитетный платеж - это равный по сумме ежемесячный платеж по кредиту;";
const string paymentTypeMsg2 =
"2 - дифференцированный платеж - это ежемесячный платеж, уменьшающийся к концу срока кредитования.";
const string invalidInputMsg = "Введены неверные значения...";
const string tableLineMsg =
" | {0,6} | {1,13:0.##}\u00A4 | {2,13:0.##}\u00A4 | {3,13:0.##}\u00A4 | {4,13:0.##}\u00A4 |";
const string tableFooterLineMsg = " | Итого: | {0,30:0.##}\u00A4 | {1,13:0.##}\u00A4 | {2,13:0.##}\u00A4 |";
CH.WriteSeparator();
//input
var creditAmountString = CH.GetStringFromConsole(inputMsg1);
var creditRateString = CH.GetStringFromConsole(inputMsg2);
CH.WriteSeparator();
var amountIsInvalid = !decimal.TryParse(creditAmountString, out var originalCreditAmount);
var rateIsInvalid = !double.TryParse(creditRateString, out var creditInterestRate);
if (amountIsInvalid || rateIsInvalid || originalCreditAmount <= 1 || creditInterestRate < 1 ||
creditInterestRate > 100)
{
Console.WriteLine(invalidInputMsg);
Console.ReadKey();
return;
}
Console.WriteLine(paymentTypeMsg);
var choosedStringIndex = CH.GetChoiceFromUser(new[] { paymentTypeMsg1, paymentTypeMsg2 }, true).ChoisedIndex;
CH.WriteSeparator();
var sumOfInterestCharges = 0m;
var sumOfPayments = 0m;
var debt = originalCreditAmount;
creditInterestRate *= 0.01;
//Table
Console.WriteLine(tableLineMsg, "Период", "Задолженность", "Начисленные %",
"Основной долг", "Сумма платежа");
if (choosedStringIndex == 0) //аннуитетный платеж
{
var monthlyCreditInterestRate = creditInterestRate / 12;
var amountOfPayment = originalCreditAmount *
(decimal)(monthlyCreditInterestRate +
monthlyCreditInterestRate /
(Math.Pow(1 + monthlyCreditInterestRate, 12d) - 1d));
for (var period = 1; period <= 12; period++)
{
var interestCharges = debt * (decimal)monthlyCreditInterestRate;
var repaymentOfCredit = amountOfPayment - interestCharges;
Console.WriteLine(tableLineMsg, period, debt, interestCharges,
repaymentOfCredit, amountOfPayment);
debt -= repaymentOfCredit;
sumOfInterestCharges += interestCharges;
sumOfPayments += amountOfPayment;
}
}
else //дифференцированный платеж
{
var repaymentOfCredit = originalCreditAmount / numberOfPeriods;
var currentYear = DateTime.Today.Year;
for (var period = 1; period <= 12; period++)
{
var interestCharges =
debt * (decimal)(creditInterestRate * DateTime.DaysInMonth(currentYear, period) / 365d);
var amountOfPayment = repaymentOfCredit + interestCharges;
Console.WriteLine(tableLineMsg, period, debt, interestCharges,
repaymentOfCredit, amountOfPayment);
debt -= repaymentOfCredit;
sumOfInterestCharges += interestCharges;
sumOfPayments += amountOfPayment;
}
}
CH.WriteSeparator();
Console.WriteLine(tableFooterLineMsg, sumOfInterestCharges, originalCreditAmount, sumOfPayments);
CH.WriteSeparator();
//Exit
Console.ReadKey();
}
private static void TaskThree()
{
// TODO Задача 3* Func, Action + =>
// В задаче нельзя объявлять делегаты
/*
* 1. Создать методы расширения для класса CarPark:
* а. Производит выборку из внутренней коллекции используя передаваемую функцию
* б. Производит сортировку внутренней коллекции используя передаваемую функцию
* 2. Создать внутреннее свойство в классе CarPark для хранение действия.
* 3. Вызывать это действие при добавлении новой машины в парк:
* => Как вариант выводить в консоль информацию о машине
* Console: Toyota RAV4 was added to the park. It costs ... $.
*/
const string carTempolate = " {0} - {1} Price: {2}";
var group = new CarPark
{
AddNewCarAction = car =>
{
Console.WriteLine($"- {car.Brand} {car.Model} was added to the park. It costs {car.Price} $");
},
Cars = new List <Car>
{
new FuelCar
{
Brand = "Brand 1",
Model = "Model A",
Price = 12000m,
ReleasedYead = 1990,
TankSize = 100
},
new FuelCar
{
Brand = "Brand 2",
Model = "Model A",
Price = 1200m,
ReleasedYead = 1990,
TankSize = 100
},
new FuelCar
{
Brand = "Brand 3",
Model = "Model A",
Price = 15000m,
ReleasedYead = 1990,
TankSize = 100
},
new FuelCar
{
Brand = "Brand 1",
Model = "Model A",
Price = 23400m,
ReleasedYead = 1990,
TankSize = 100
}
}
};
//Before sort
foreach (var car in group.Cars)
{
Console.WriteLine(carTempolate, car.Brand, car.Model, car.Price);
}
CH.WriteSeparator();
group.SortCars((car1, car2) => (int)(car1.Price - car2.Price));
//After sort
foreach (var car in group.Cars)
{
Console.WriteLine(carTempolate, car.Brand, car.Model, car.Price);
}
CH.WriteSeparator();
var brand1Cars = group.SelectCars(car => car.Brand == "Brand 1");
//Selected
foreach (var car in brand1Cars)
{
Console.WriteLine(carTempolate, car.Brand, car.Model, car.Price);
}
}
