05. Magic exchangeable words

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

namespace _05_Magic_exchangeable_words
{
    class Program
    {
        static void Main(string[] args)
        {
            //again:
            var inputLine = Console.ReadLine().Split();
            var result = IsMagic(inputLine);
            Console.WriteLine(result.ToString().ToLower());
            //goto again;
        }

        public static bool IsMagic(string[] inputLine)
        {
            var firstWord = inputLine[0];
            var secondWord = inputLine[1];
            var shorterString = firstWord.Length <= secondWord.Length ? firstWord.ToCharArray() : secondWord.ToCharArray();
            var longerString = firstWord.Length > secondWord.Length ? firstWord.ToCharArray() : secondWord.ToCharArray();
            Dictionary<string, string> mappedChars = new Dictionary<string, string>();

            for (int i = 0; i < shorterString.Length; i++)
            {
                var charFromShorterWord = shorterString[i].ToString();
                var charfromLongerWord = longerString[i].ToString();
                if (!mappedChars.ContainsKey(charFromShorterWord))
                {
                    mappedChars.Add(charFromShorterWord, charfromLongerWord);
                }
                if (!mappedChars[charFromShorterWord].Equals(charfromLongerWord))
                {
                    return false;
                }
            }
            for (int j = shorterString.Length; j < longerString.Length; j++)
            {
                var charFromLongerWord = longerString[j].ToString();
                if (!mappedChars.ContainsValue(charFromLongerWord))
                {
                    return false;
                }
            }
            return true;
        }
    }
}