[Solved] Write longest and shortest palindrome from text file

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Similar to previous answer but with the following suggestions

  1. Initialize longest and shortest.
  2. Ignore case when comparing. Could still do this with SequenceEqual instead of comparing strings. May not be needed if you know you won’t be comparing Anna to annA.

  3. When checking if you found the shortest you need to remember that
    shortest.Length with be 0 to start so you will want to store the first palindrome found in shortest if shortest.Length==0.

    static void Main(string[] args)
{
    var lines = System.IO.File.ReadAllLines(@"C:\palindromy.txt");

    string longest = string.Empty;
    string shortest = string.Empty;

    foreach (var line in lines)
    {
        if (line.Length == 0) continue;

        char[] charArray = line.ToCharArray();
        Array.Reverse(charArray);
        string reversedLine = new string(charArray);

        if (line.Equals(reversedLine, StringComparison.OrdinalIgnoreCase))
        {
            if (line.Length > longest.Length)
            {
                longest = line;
            }
            if (line.Length < shortest.Length || shortest.Length == 0)
            {
                shortest = line;
            }
        }
    }

    Console.WriteLine(longest);
    Console.WriteLine(shortest);
}

solved Write longest and shortest palindrome from text file