Java question: Add an ArrayList of BigIntegers to one BigInteger?

Question

This is where I read in the data from a text file, save each line as a BigInteger. I want to be able to add all of the BigIntegers in this ArrayList to one resulting BigInteger or any value what-so-ever. I have tested the program to this point and there is successful population of the ArrayList of BigIntegers.

//Read in each line as a BigInteger. Save each BigInteger to the ArrayList.

String strLine;

ArrayList<BigInteger> lines = new ArrayList<BigInteger>();

while ((strLine = br.readLine()) != null) {

lines.add(new BigInteger(strLine));

}

Thanks in advances!

Ari · Accepted Answer

import java.util.*;

import java.io.*;

class BigIntegers {

public static void main(String [ ] args) throws FileNotFoundException {

List <BigInteger> list = new ArrayList<BigInteger>();

Scanner scanner = new Scanner(new File("myFile.txt"));

while(scanner.hasNext()) {

String number = scanner.next();

BigInteger bigInteger = new BigInteger(number);

list.add(bigInteger);

}

BigInteger total = BigInteger.ZERO;

for(BigInteger b: list) {

total = total.add(b);

}

System.out.println("The sum of all of the BigIntegers was " + total);

}

? · Answer

it is your multiply it really is inaccurate. verify the signature of the mind-set and also you'll locate that it in common words takes one parameter. the different parameter is from the article that multiply is utilized to. So... bI= new BigInteger("2000000") gadget.out.print(bI.multiply(new BigInteger("ten thousand")));

Trending News

Java question: Add an ArrayList of BigIntegers to one BigInteger?

2 Answers