Write a program to count the maximum and minimum occurring character in a string

Solution

using System;

namespace CharOccuerance
{
    class Program
    {
        static void Main()
        {
            Console.WriteLine("Enter a string");
            var str = Console.ReadLine();
            var charCounts = new int[str.Length];

            char minChar = str[0], maxChar = str[0];
            int max;

            var charArray = str.ToCharArray();

            for (var i = 0; i < charArray.Length; i++)
            {
                charCounts[i] = 1;
                for (var j = i + 1; j < charArray.Length; j++)
                {
                    if (charArray[i] != charArray[j] || charArray[i] == ' ' || charArray[i] == '0') continue;
                    charCounts[i]++;
                    charArray[j] = '0';
                }
            }

            var min = max = charCounts[0];
            for (var i = 0; i < charCounts.Length; i++)
            {
                if (min > charCounts[i] && charCounts[i] != '0')
                {
                    min = charCounts[i];
                    minChar = charArray[i];
                }

                if (max >= charCounts[i]) continue;
                max = charCounts[i];
                maxChar = charArray[i];
            }

            Console.WriteLine($"Minimum occurring char: {minChar}");
            Console.WriteLine($"Maximum occurring char: {maxChar}");
            Console.ReadLine();
        }
    }
}