Question

How to calculate power for large numbers in Java

Answer 1

import java.math.BigInteger;

public class Program {

    public static BigInteger poweBigInteger(int base, int exponent) {
        BigInteger power = BigInteger.valueOf(base).pow(exponent); 

        return power;
    }

    public static void main(String[] args) {
        int base = 2; int exponent = 15;
        System.out.println("Sum of digits of 2^15 is: " + poweBigInteger(base, exponent));

        base = 2; exponent = 100;
        System.out.println("Sum of digits of 2^100 is: " + poweBigInteger(base, exponent));
    }
}



/*
run:

Sum of digits of 2^15 is: 32768
Sum of digits of 2^100 is: 1267650600228229401496703205376

*/

 

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