Java BigInteger-HackerRank Solution

In this problem, you have to add and multiply huge numbers! These numbers are so big that you can't contain them in any ordinary data type like a long integer.

Difficulty :      Easy

Max Score :   10

Use the power of Java's BigInteger class and solve this problem.

Input Format

There will be two lines containing two numbers,a and b .

Constraints

 a and b are non-negative integers and can have maximum 200 digits.

Output Format

Output two lines. The first line should contain a+b, and the second line should contain a*b. Don't print any leading zeros.

Sample Input

 1234
 20

Sample output

 

 1254
 24680

Explanation

1234 + 20 = 1254

1234 * 20 = 24680

Solution 

 import java.io.*;
 import java.util.*;
 import java.math.BigInteger;

 public class Solution {

 public static void main(String[] args) {

 Scanner scan = new Scanner(System.in);
 BigInteger a = new BigInteger(scan.next());
 BigInteger b = new BigInteger(scan.next());
 System.out.println(a.add(b));
 System.out.println(a.multiply(b));
  }
 }

What is Big Integer

BigInteger class is used for the mathematical operation which involves very big integer calculations that are outside the limit of all available primitive data types.