Given an integer, reverse it. Integers are within range [-2^15, 2^15 - 1].

To reverse an integer, you can repeatedly extract the last digit using the modulo operator (% 10), build the reversed number by multiplying the current reversed number by 10 and adding the extracted digit, and then remove the last digit from the original number using integer division (/ 10). Handle negative numbers by noting the sign, reversing the absolute value, and then reapplying the sign. Be mindful of potential integer overflow during the reversal process.