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#c++ #dsa #recursion #string #palindrome #checkpalindrome

code to check palindrome using recursion

bool checkPalindrome (string s, int start, int length) {
  if (start>length) {
    return true;
	}
  if (s[start] != s[length]) {
    return false;
	}
  else {
    return checkPalindrome(s,start+1,length-1;)
  }
}

#java #mathematics #lecture #gfg #geeksforgeeks #checkpalindrome

Palindrome Numbers - Check if number is Palindrome

// Time Complexity: O(logN), Auxiliary Space: O(1)
import java.io.*;
import java.util.*;

public class CheckPalindrome {

	static boolean isPal(int n)
	{
		int rev = 0;

		int temp = n;
		// reversed integer is stored in reversed variable
		while(temp != 0)
		{
			int ld = temp % 10;

			rev = rev * 10 + ld;

			temp = temp / 10;
		}	
		// palindrome if orignal and reversed are equal
		return rev==n;
	}

	public static void main (String[] args) {
		
		int number = 4553;

		System.out.println(isPal(number));

	}
}

code to check palindrome using recursion

Palindrome Numbers - Check if number is Palindrome

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