Overview

In Java, the int data type can only represent integers from $-2,147,483,648$ to $2,147,483,647.$ This isn$$t big enough to store very large numbers. For example, to store the population of Earth $($approximately $8$ billion as of $2024)$ or to compute n$!$ for large values of n$.$

The Java libraries contain a built$-$in class called BigInteger to handle arbitrarily large integers. In this problem, you will write your own class called BigInt that has a subset of the functionality of the built$-$in Java class.