逆置数字

int reverse(int x) {
    if (x == 0){
        return 0;
    }
    while (x % 10 == 0){
        x /= 10;
    }
    auto&& s = to_string(x);
    auto result = atoll(string(s.crbegin(), s.crend()).data());
    if (result > INT32_MAX){
        return 0;
    }
    return static_cast<int>(x < 0? -result : result);
}

int reverse(int x) {
    long long result = 0;
    while (x != 0){
        result = result * 10 + x % 10;
        x /= 10;
    }
    if (result > INT32_MAX || result < INT32_MIN){
        return 0;
    }
    
    return static_cast<int>(result);
}