public void CheckPalindrome(PalindromeChecker game, string input, int distanceFromCenter)
{
bool isPalindrome = false;
int halfway = input.Length / 2;
if (input.Length % 2 == 0) //EVEN LENGTH
{
if (distanceFromCenter == halfway && distanceFromCenter != 0)
{
game.IsPalindrome = true;
}
else if (input[halfway + distanceFromCenter] == input[halfway - 1 - distanceFromCenter] && distanceFromCenter < halfway)
{
distanceFromCenter++;
game.CheckPalindrome(game, input, distanceFromCenter);
}
}
else if (input.Length % 2 == 1) //ODD LENGTH
{
if (input[halfway + distanceFromCenter] == input[halfway - distanceFromCenter] && distanceFromCenter < halfway)
{
distanceFromCenter++;
game.CheckPalindrome(game, input, distanceFromCenter);
}
else if (distanceFromCenter == halfway && distanceFromCenter != 0)
{
game.IsPalindrome = true;
}
}
}
public static void Main()
{
PalindromeChecker game = new PalindromeChecker();
Console.WriteLine("Welcome to the palindrome checker!");
Console.WriteLine("Enter a phrase to check:");
string input = Console.ReadLine();
int distanceFromCenter = 0;
game.CheckPalindrome(game, input, distanceFromCenter);
if (game.IsPalindrome)
{
Console.WriteLine("Your phrase is a palindrome!");
}
else
{
Console.WriteLine("Your phrase is not a palindrome.");
Console.WriteLine("Want to check another phrase? (Enter Y / N)");
string newGame = Console.ReadLine();
if (newGame[0].ToString().ToUpper() == "Y")
{
Main();
}
else
{
Console.WriteLine("Goodbye.");
}
}
}
public void IsStarsPalindrome()
{
// Arrange
var palindrome = "stars";
var expectedResult = false;
var checkWord = new PalindromeChecker();
// Actual
var actualResult = checkWord.CheckPalindrome(palindrome);
// Assert
Assert.Equal(expectedResult, actualResult);
}
public void IsPalindrome3()
{
// Arrange
var palindrome = "Some men interpret nine memos";
var expectedResult = true;
var checkWord = new PalindromeChecker();
// Actual
var actualResult = checkWord.CheckPalindrome(palindrome);
// Assert
Assert.Equal(expectedResult, actualResult);
}
public void IsPalindrome2()
{
// Arrange
var palindrome = "O, a kak Uwakov lil vo kawu kakao!";
var expectedResult = true;
var checkWord = new PalindromeChecker();
// Actual
var actualResult = checkWord.CheckPalindrome(palindrome);
// Assert
Assert.Equal(expectedResult, actualResult);
}
public static void Main()
{
PalindromeChecker game = new PalindromeChecker();
Console.WriteLine("Enter a phrase to see if it's a palindrome:");
string input = Console.ReadLine();
int distanceFromCenter = 0;
game.CheckPalindrome(input, distanceFromCenter);
if (game.GetIsPalindrome())
{
Console.WriteLine("Your phrase is a palindrome!");
OfferNewGame();
}
else
{
Console.WriteLine("Your phrase is not a palindrome.");
OfferNewGame();
}
}