Question

How to compare 2 more than 30 digit number in java

Asked by: gunjankhatri

Can i get the source code or logic to compare 2 more than 30 digit number?

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Asked On
2009-04-08 at 12:04:47ID24307017
Topic

Java Programming Language

Participating Experts
4
Points
125
Comments
7

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Answers

 

by: basav_comPosted on 2009-04-08 at 12:12:01ID: 24100716

Can you elaborate your question more..

 

by: InteractiveMindPosted on 2009-04-08 at 12:31:02ID: 24100851

Use the java.math.BigInteger class to store your numbers and compare them.
http://java.sun.com/j2se/1.4.2/docs/api/java/math/BigInteger.html

 

by: Thomas4019Posted on 2009-04-08 at 13:48:42ID: 24101576

You could turn them both into Strings and compare them with their equals() method.

 

by: isarasooPosted on 2009-04-09 at 04:03:13ID: 24106000

Hi , I have a similar problem to this currently i got around it by loading the digits straight into a char array and then compare the outputs and it works but il rather have a simpler solution.

I tried the above methods suggesting to convert it to string, but that would only be possible if i can store the value as something initially i.e. long  num = 40 digits.

Just a question for InteractiveMind  how many digits can you assign to BigInteger.
sorry in advance if im not allowed to ask a counter question here

thanks

 

by: isarasooPosted on 2009-04-09 at 15:47:01ID: 24112405

I have just tested bigInteger class and it works fine for numbers over 30dig.  thanks InteractiveMind

 

by: Thomas4019Posted on 2009-04-09 at 16:12:46ID: 24112526

I am fairly sure BigInterger is designed to hold unlimited amount of digitis. It should just keep allocating more memory.

20120131-EE-VQP-002

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