C#: Check if a given string is a palindrome or not

Last update on June 24 2025 12:57:40 (UTC/GMT +8 hours)

Check Palindrome String

Write a C# program to check if a given string is a palindrome or not.

Sample Example:
For 'aba' the output should be true
For 'abcd' the output should be false

Sample Solution:

C# Sharp Code:

using System;

public class Example
{
    // Function to check if a string is a palindrome
    public static bool checkPalindrome(string inputString)
    {
        // Convert the input string into a character array
        char[] c = inputString.ToCharArray();

        // Reverse the character array
        Array.Reverse(c);

        // Check if the reversed string is equal to the original input string
        return new string(c).Equals(inputString);
    }

    // Main method to test the checkPalindrome function
    public static void Main()
    {
        // Testing the checkPalindrome function with different input strings
        Console.WriteLine(checkPalindrome("aaa"));    // Output: True
        Console.WriteLine(checkPalindrome("abc"));    // Output: False
        Console.WriteLine(checkPalindrome("madam"));  // Output: True
        Console.WriteLine(checkPalindrome("1234"));   // Output: False
    }
}

Sample Output:

True
False
True
False

Visual Presentation:

C# Sharp Exercises: Check if a given string is a palindrome or not

Flowchart:

For more Practice: Solve these Related Problems:

Write a C# program to check if a given string can be rearranged to form a palindrome.
Write a C# program to check if the given string is a palindrome, ignoring non-alphanumeric characters and case.
Write a C# program to find the longest palindromic substring in a given string.
Write a C# program to count how many palindromic substrings exist in a given string.

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