Problem
Decide whether the decimal digits of n read the same forwards and backwards. Negative numbers are never palindromes because of the minus sign.
Implement is_palindrome_number(n).
Input
n: The number to check.
Output
Return true for a palindromic number, otherwise false.
Constraints
-10¹⁸ ≤ n ≤ 10¹⁸
Examples
Example 1
Input:
n = 12321
Expected output:
expected = True
Input:
long long n = 12321;
Expected output:
bool expected = true;
Input:
long n = 12321;
Expected output:
bool expected = true;
Explanation
12321 reversed is 12321.
Example 2
Input:
n = -121
Expected output:
expected = False
Input:
long long n = -121;
Expected output:
bool expected = false;
Input:
long n = -121;
Expected output:
bool expected = false;
Explanation
The minus sign makes "-121" differ from "121-".
References
This challenge is adapted for CodeUtility. Follow the statement and constraints above.