using System;

namespace SortFilterMinMax
{
    class Program
    {
        static void Main(string[] args)
        {
            string[] cities = new string[3];
            InputStringArray(cities);
            Console.WriteLine("---------- I am sorting ------");
            SortStringArray(cities);
            OutpuStringArray(cities);
            Console.WriteLine("------------- I am filtering ----------------");
            OutpuStringArray(FilterStringArray(cities, 'P'));

            int[] intArray = new int[10];
            Console.WriteLine("------------- I am entering the numbers-------------");
            // InputIntArray(intArray);
            SeedIntArray(intArray, 2, 100);
            OutpuIntArray(intArray);
            Console.Write("The max element is: ");
            Console.WriteLine(MaxIntArray(intArray));
            Console.WriteLine(MinIntArray(intArray));
        }

        public static void InputStringArray(string[] array)
        {
            for (int i = 0; i < array.Length; i++)
            {
                Console.Write("Please enter element[{0}]: ", i);
                array[i] = Console.ReadLine();
            }
        }

        public static void SortStringArray(string[] array)
        {
            string swap;
            for (int i = 0; i < array.Length; i++)
            {
                for (int j = i + 1; j < array.Length; j++)
                {
                    if (String.Compare(array[i], array[j]) > 0)
                    {
                        swap = array[i];
                        array[i] = array[j];
                        array[j] = swap;
                    }
                }
            }
        }

        public static void OutpuStringArray(string[] array)
        {
            for (int i = 0; i < array.Length; i++)
            {
                Console.WriteLine(array[i]);
            }
        }

        public static string[] FilterStringArray(string[] array, char firstLetter) {
            string[] filterdArray = new string[array.Length];
            int counter = 0;
            for (int i = 0; i < array.Length; i++)
            {
                if (array[i][0] == firstLetter)
                {
                    filterdArray[counter] = array[i];
                    counter++;
                }
            }
            return filterdArray;
        }

        public static void InputIntArray(int[] array)
        {
            for (int i = 0; i < array.Length; i++)
            {
                Console.Write("Please enter element[{0}]: ", i);
                array[i] = int.Parse(Console.ReadLine());
            }
        }

        public static void OutpuIntArray(int[] array)
        {
            for (int i = 0; i < array.Length; i++)
            {
                Console.WriteLine(array[i]);
            }
        }

        public static int MaxIntArray(int[] array)
        {
            int max = array[0];
            for (int i = 0; i < array.Length; i++)
            {
                if (max < array[i]) 
                { 
                    max = array[i]; 
                }
            }
            return max;
        }

        public static int MinIntArray(int[] array)
        {
            int min = array[0];
            for (int i = 0; i < array.Length; i++)
            {
                if (min > array[i])
                {
                    min = array[i];
                }
            }
            return min;
        }

        public static void SeedIntArray(int[] array, int min, int max)
        {
            Random randomGen = new Random();
            for (int i = 0; i < array.Length; i++)
            {
                array[i] = randomGen.Next(min, max);
            }
        }
    }
}