algorithm_math_palindrome_number.java

algorithm_math_palindrome_number.java

public class Solution {
    public boolean isPalindrome(int x) {
        if (x < 0) return false;
        else if (x >= 0 && x < 10) return true;
        
        int originalX = x;
        int reversedX = 0;
        while (x > 0) {
            reversedX = reversedX * 10 + x % 10;
            x /= 10;
        }
        return originalX == reversedX;
    }
}