Java/Maths/PalindromeNumber.java at master · rcfgnu/Java · GitHub

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package Maths;

public class PalindromeNumber {

public static void main(String[] args) {

assert isPalindrome(12321);

assert !isPalindrome(1234);

assert isPalindrome(1);

}

/**

* Check if {@code n} is palindrome number or not

* @param number the number

* @return {@code true} if {@code n} is palindrome number, otherwise {@code false}

public static boolean isPalindrome(int number) {

if (number < 0) {

throw new IllegalArgumentException(number + "");

}

int numberCopy = number;

int reverseNumber = 0;

while (numberCopy != 0) {

int remainder = numberCopy % 10;

reverseNumber = reverseNumber * 10 + remainder;

numberCopy /= 10;

}

return number == reverseNumber;

}

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