Check if a string is a palindrome

Question

I have a string as input and have to break the string in two substrings. If the left substring equals the right substring then do some logic.

How can I do this?

Answer 1

int length = myString.Length;
for (int i = 0; i < length / 2; i++)
{
    if (myString[i] != myString[length - i - 1])
        return false;
}
return true;

Answer 2

 private void CheckIfPalindrome(string str) 
        {
            //place string in array of chars
            char[] array = str.ToCharArray(); 
            int length = array.Length -1 ;
            Boolean palindrome =true;
            for (int i = 0; i <= length; i++)//go through the array
            {
                if (array[i] != array[length])//compare if the char in the same positions are the same eg "tattarrattat" will compare array[0]=t with array[11] =t if are not the same stop the for loop
                {
                    MessageBox.Show("not");
                    palindrome = false;
                    break;

                }
                else //if they are the same make length smaller by one and do the same 
                {                   
                  length--;
                }

            }
            if (palindrome) MessageBox.Show("Palindrome"); 

        }

Answer 3

Using LINQ and off course far from the best solution

var original = "ankYkna";
var reversed = new string(original.Reverse().ToArray());
var palindrom = original == reversed;

Answer 4

This way is both concise in appearance & processes very quickly.

Func<string, bool> IsPalindrome = s => s.Reverse().Equals(s);

Answer 5

class Program
{
    static void Main(string[] args)
    {

        string s, revs = "";
        Console.WriteLine(" Enter string");
        s = Console.ReadLine();
        for (int i = s.Length - 1; i >= 0; i--) //String Reverse
        {
            Console.WriteLine(i);
            revs += s[i].ToString();
        }
        if (revs == s) // Checking whether string is palindrome or not
        {
            Console.WriteLine("String is Palindrome");
        }
        else
        {
            Console.WriteLine("String is not Palindrome");
        }
        Console.ReadKey();
    }
}

Answer 6

    public static bool IsPalindrome(string str)
    {
        int i = 0;
        int a = 0;

        char[] chr = str.ToCharArray();
        foreach (char cr in chr)
        {
            Array.Reverse(chr);
            if (chr[i] == cr)
            {
                if (a == str.Length)
                {
                    return true;
                }
                a++;
                i++;
            }
            else
            {
                return false;
            }
        }
        return true;
    }