Reverse digits of an integer. Example1: x = 123, return 321 Example2: x = -123, return -321

Reverse Integer.cpp

class Solution {
public:

    int lastDigit(int x) {
        return x % 10;
    }

    int reverse(int x) {
        // Start typing your C/C++ solution below
        // DO NOT write int main() functio
        int result = 0;
        while(x != 0) {
            result += lastDigit(x);
            x /= 10;
            result *= 10;
        }
        
        result /= 10;
        
        return result;
    }
};