Is there any simple method of string multiplication in java ..?

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February 13, 2012 at 3:25 PM

public class StringMultiplication { public static void main(String[] args) { String number1 = "17"; String number2 = "15"; char[] n1 = number1.toCharArray(); char[] n2 = number2.toCharArray(); int result = 0; for (int i = 0; i < n1.length; i++) { for (int j = 0; j < n2.length; j++) { result += (n1[i] - '0') * (n2[j] - '0')* (int) Math.pow(10, n1.length * 2 - (i + j + 2)); } } System.out.println(result); } }

February 13, 2012 at 3:25 PM

import java.math.*; public class StringMultiplication { public static void main(String[] args) { String number1 = "17"; String number2 = "15"; BigInteger num1=new BigInteger(number1); BigInteger num2=new BigInteger(number2); BigInteger result=num1.multiply(num2); System.out.println(result); } }

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