reverse a string and checking weather it is palindrome r not

Question

Hi

I am working on different things .. here comes i want to print the string reversed output and parallel y check weather it is palindrome or not . .

Note : i enter the string dynamically i.e in console window ..

Help it :)

I can code this scenario in c# at ease but interestingly i an finding too many errors while doing the same . so help it guys

In console window i enter the string like this ::: --> A man a plan , a canal - panama

Ty guys

Vulpes · Answer

Try this: import java.io.*; class Strings { public static void main(String[] args) throws IOException { BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); String text; while(true) { System.out.println("Enter a line of text or q to quit"); try { text = br.readLine(); } catch(IOException e) { System.out.println("Something went wrong, program terminating."); return; } if (text.toLowerCase().equals("q")) return; char[] chars = text.toCharArray(); // reverse the string for (int i = text.length() - 1; i >= 0; i--) { chars[text.length() - 1 - i] = text.charAt(i); } String reverse = new String(chars); System.out.println(reverse); /* Convert to lower case and strip out any non-letters to see if it's a palindrome or not */ char[] letters = new char[text.length()]; int j = 0; text = text.toLowerCase(); for (int i = 0; i { char c = text.charAt(i); if (c >= 97 && c { letters[j] = c; j++; } } text = new String(letters); char[] revLetters = new char[reverse.length()]; j = 0; reverse = reverse.toLowerCase(); for (int i = 0; i { char c = reverse.charAt(i); if (c >= 97 && c { revLetters[j] = c; j++; } } reverse = new String(revLetters); if (text.equals(reverse)) { System.out.println("It's a palindrome!"); } else { System.out.println("It's not a palindrome"); } System.out.println(); } } }

Jaganathan Bantheswaran · Answer

Please change the Topic from java to C#. string input = "hello world"; string output = new string(input.ToCharArray().Reverse().ToArray()); Console.write("Is " + input + " palindrome? => " + String.Compare(input.Trim(), output.Trim(), true) == 0)

reverse a string and checking weather it is palindrome r not

Answers (2)