06. Courses Малко помощ

Незнам как да го разпиша накрая

Условие:

Write a program that keeps information about courses. Each course has a name and registered students.

You will be receiving a course name and a student name, until you receive the command "end". Check if such course already exists, and if not, add the course. Register the user into the course. When you receive the command "end", print the courses with their names and total registered users, ordered by the count of registered users in descending order. For each contest print the registered users ordered by name in ascending order.

Input

Until the "end" command is received, you will be receiving input in the format: "{courseName} : {studentName}".

The product data is always delimited by " : ".

Output

Print the information about each course in the following the format:
"{courseName}: {registeredStudents}"
Print the information about each student, in the following the format:
"-- {studentName}"

Examples

Input

Output

Programming Fundamentals : John Smith

Programming Fundamentals : Linda Johnson

JS Core : Will Wilson

Java Advanced : Harrison White

end

Programming Fundamentals: 2

-- John Smith

-- Linda Johnson

JS Core: 1

-- Will Wilson

Java Advanced: 1

-- Harrison White

Algorithms : Jay Moore

Programming Basics : Martin Taylor

Python Fundamentals : John Anderson

Python Fundamentals : Andrew Robinson

Algorithms : Bob Jackson

Python Fundamentals : Clark Lewis

end

Python Fundamentals: 3

-- Andrew Robinson

-- Clark Lewis

-- John Anderson

Algorithms: 2

-- Bob Jackson

-- Jay Moore

Programming Basics: 1

-- Martin Taylor

Моят код:

using System;
using System.Collections.Generic;
using System.Linq;

namespace ConsoleApp11
{
class Program
{
static void Main(string[] args)
{
Dictionary<string, List<string>> students = new Dictionary<string, List<string>>();
Dictionary<string, int> courses = new Dictionary<string, int>();

string output;

while ((output = Console.ReadLine()) != "end")
{
string[] inputArray = output.Split(':');
string kurs = inputArray[0];
string nameStudent = inputArray[1];
if (!students.ContainsKey(kurs))
{
students.Add(kurs,new List<string>());

courses[kurs] = 0;

}
if (!students[kurs].Contains(nameStudent))
{
students[kurs].Add(nameStudent);
}
courses[kurs]++;

}
foreach (var kvp in courses)
{
Console.WriteLine($"{kvp.Key} : {kvp.Value}");
foreach (var name in students)
{
Console.WriteLine($"--{(string.Join(" ",name.Value))}");
}
}
}
}

}

Здравей,

Не разбирам защо ти е листа "courses", след като в "students" имаш цялата информация(Между другото речникът "students" е по-логично да се казва "courses").

Сортирането и принтиранмето може да стане така:

foreach (var kvp in students.OrderByDescending(x => x.Value.Count)) // Сортираме по броя на регистрираните юзъри
{
Console.WriteLine($"{kvp.Key}: {kvp.Value.Count()}" +
$"{Environment.NewLine}" +
$"{string.Join(Environment.NewLine, kvp.Value.OrderBy(x => x).Select(x => $"-- {x}"))}");// Сортираме по имената
}

}

И трябва да сплитваш: string[] inputArray = output.Split(" : ");