31 lines
842 B
Java
31 lines
842 B
Java
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package Maths;
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public class PalindromeNumber {
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public static void main(String[] args) {
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assert isPalindrome(12321);
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assert !isPalindrome(1234);
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assert isPalindrome(1);
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}
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/**
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* Check if {@code n} is palindrome number or not
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*
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* @param number the number
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* @return {@code true} if {@code n} is palindrome number, otherwise {@code false}
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*/
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public static boolean isPalindrome(int number) {
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if (number < 0) {
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throw new IllegalArgumentException(number + "");
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}
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int numberCopy = number;
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int reverseNumber = 0;
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while (numberCopy != 0) {
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int remainder = numberCopy % 10;
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reverseNumber = reverseNumber * 10 + remainder;
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numberCopy /= 10;
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}
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return number == reverseNumber;
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}
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}
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