Class Task 46#

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

namespace ConsoleApplication1
{
    class Program
    {
        static void Input(int[] Arr)
        {
            int x;
            for (int i = 0; i < 7; i++)
            {
                Console.WriteLine("Enter a grade :)");
                x = int.Parse(Console.ReadLine());
                Arr[x]++;
            }
        }
        //-----------------------------------------
        static void Pop(int[] Arr1, int[] Arr2)
        {
            for (int i = 0; i < Arr1.Length; i++)
            {
                Arr2[(Arr1[i]/ 10) % 100]++;
            }
        }
        //-----------------------------------------
        static void Main(string[] args)
        {
            int[] grades = new int[101];
            int[] popular = new int[10];
            Input(grades);
            Pop(grades, popular);
            //-----------------------------------------
            for (int i = 0; i < grades.Length; i++)
            {
                if (grades[i] > 0)
                {
                    Console.Write(i + " ");
                    Console.WriteLine(grades[i]);
                }
            }
            //-----------------------------------------
            int best = int.MinValue;
            for (int i = 0; i < popular.Length; i++)
            {
                best = Math.Max(best, popular[i]);
            }
            Console.WriteLine(best);
            Console.ReadLine();
        }
    }
}