How can I store a big number? for example I want to store the 100000000 ! and I want it in my calculation

Answer 1

use BigInteger .Heres complete detail :-
https://docs.oracle.com/javase/7/docs/api/java/math/BigInteger.html

Also, Check out my code :-

https://code.sololearn.com/c78uTK8OaL4w/?ref=app

Answer 2

Use BigInteger. Here's a small tutorial.
https://code.sololearn.com/WS60ll19CFej/?ref=app

Answer 3

Keep in mind that if you use strings each digit in number will take 1 byte of memory. So if you got a number with 1000000000 digits you should find a 1 gb of RAM to store it.

Answer 4

use long integer or reference data type..

Answer 5

use datatype of long, you can store that number.

Else, you can use string.

Answer 6

Anytime bro, @SaraBolouri

Answer 7

use the data type "long" if the number is too big for an int. max number for long is like 9.4 quintillion, so if the number is bigger than that, use the BigInteger class

Answer 8

@Meharban Singh tnx a lot ... your code is very good for me

Answer 9

Dislike? Am I wrong? If yes I would love to hear where :)

Answer 10

@Jeth Never thought of that, thanks for teaching me something new :o

Answer 11

@Jeth l mean,not digits...my number is 1000000000,not the number of digits....but tax for teaching

Answer 12

Store it as a string, I had the similar task where I had to add two numbers that were out of bonds of int and long. The way I did it is that I stored the number as a string, and added up each digits of the numbers indvidualy, kind of like kids do it in elementary school

12345 +
05678
-------------
18023

Edit: @Krishna 's way works, but it still has a limited range of numbers it accepts where as this way doesn't. Keep in my by doing it this way you can't really do complex stuff efficiently.

Answer 13

use data type "long"