check if number is a palindrome java

public class StringPalindromeJava { public static void isPalindrome(String str) { String strReverse = new StringBuffer(str).reverse().toString(); // checking for palindrome if(str.equals(strReverse)) { System.out.println(str + " is palindrome string."); } else { System.out.println(str + " is not palindrome string."); } } public static void main(String[] args) { // palindrome java isPalindrome("eye"); isPalindrome("rotator"); } }

palindrome in java

package test
//The function below checks if a string is a palindrome
//True = Is a palindrome & False = Not a palindrome
	public boolean isPalindromString(String text){
    	String reverse = reverse(text);
      	if(text.equals(reverse))
    	{
        	return true;
      	}
      
      	return false;
    }
//This function returns the reverse String of its input.
//Ex. if given "hello", it will return "olleh"
	public String reverse(String input)
    {     
		if(input == null || input.isEmpty())
        {
			return input;
        }
return input.charAt(input.length()- 1) + reverse
                         (input.substring(0, input.length() - 1));
    }

Posted by: Guest on January-14-2021

package com.candidjava; import java.util.Scanner; public class PalindromeUptoN{ public static void main(String[] args) { int n, b, rev = 0; Scanner sc = new Scanner(System.in); System.out.println("Enter the Palindrome No N:"); int N = sc.nextInt(); System.out.print("Palindrome numbers from 1 to N:"); for (int i = 1; i <= N; i++) { n = i; while (n > 0) { b = n % 10; rev = rev * 10 + b; n = n / 10; } if (rev == i) { System.out.print(i + " "); } rev = 0; } } }

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