×
Namespaces

Variants
Actions
(Difference between revisions)

How to swap variable values in Java ME using bitwise operations

From Nokia Developer Wiki
Jump to: navigation, search
hamishwillee (Talk | contribs)
m (Hamishwillee - Fix categories)
hamishwillee (Talk | contribs)
m (Hamishwillee - Fix categories)
Line 1: Line 1:
[[Category:Java ME]][[Category:Code Snippet]][[Category:Math]]
+
[[Category:Java ME]][[Category:Code Snippet]][[Category:General Programming]]
 
{{ArticleMetaData <!-- v1.1 -->
 
{{ArticleMetaData <!-- v1.1 -->
 
|sourcecode= <!-- Link to example source code e.g. [[Media:The Code Example ZIP.zip]] -->
 
|sourcecode= <!-- Link to example source code e.g. [[Media:The Code Example ZIP.zip]] -->

Revision as of 06:04, 19 July 2012

Article Metadata
Article
Created: giridharn (23 May 2007)
Last edited: hamishwillee (19 Jul 2012)


Heres a sample code that swaps 2 variable values

class test 
{
public static int a = 10,b = 20;
public static void main(String[] args)
{
test t = new test();
t.swap();
}
 
public void swap(){
a= a^b;
b = b^a;
a = a^b;
System.out.println("a "+a+" b "+b);
}
}

The above code can be considered quite optimized. It does not use any temporary variables. Secoundly it uses bitwise operators which also do internally require temp varibales to do the operation. And thirdly it will be faster than the normal swap operations as bitwise operations are considered to be faster then other normal operations.

163 page views in the last 30 days.

Was this page helpful?

Your feedback about this content is important. Let us know what you think.

 

Thank you!

We appreciate your feedback.

×