Sorting array double or int value and keeping the associated identifier.

Question

Hi,
How would I sort an array which contains a double or int value (I know how to do that) but I also want to keep the unique identifier which is associated to array element after the array has been sorted:
example:
identifier: 15STH7425042735
double: 742500.000
Thanks,
John J. Mitchell

Answer 1

Please define an it in form of entity first and then think of operating on structured data.
a better approach here would be please create an instances of appropriate structured data arrange them in form of a list and then apply specified logic on them
here is an example which you might think of implementing it and would more appropriate as per your stated requirements.
public class SampleBean implements Serializable{
   private String uniqueIdentifier = new String();
   private double appValue = 0.0;
   public void setUniqueIdentifier(String uniqueIdentifier){
       this.uniqueIdentifier = uniqueIdentifier;
   public String getUniqueIdentifier(){
      return this.uniqueIdentifier;
   public void setAppValue(double appValue){
          this.appValue = appValue;
   public double getAppValue(){
        return this.appValue;
}Sample Comparators:
Comparator comparator4AppValue = new Comparator(){
      public int compare(Object obj1,Object obj2){
              return Double.compare(((SampleBean)obj1).getAppValue(),((SampleBean)obj2).getAppValue());
Comparator comparator4UniqueIdentifier = new Comparator(){
      public int compare(Object obj1,Object obj2){
              return ((SampleBean)obj1).getUniqueIdentifier().compareTo( ((SampleBean)obj2).getUniqueIdentifier());
};Assuming that you have acquired an Array or List 'N' Elements of SampleBean with appropriate values.
the belows is the method of how to sort specified Array/List
In case of array
SampleBean sb[] = this.getSampleBeansArray();
// in order to sort using double value inside SampleBean array.
Arrays.sort(sb,comparator4AppValue);
// in order to sort using unique Identifier value inside SampleBean array.
Arrays.sort(sb,comparator4UniqueIdentifier);In case of a list
List sb = this.getSampleBeansList();
// in order to sort using double value inside SampleBean array.
Collections.sort(sb,comparator4AppValue);
// in order to sort using unique Identifier value inside SampleBean array.
Collections.sort(sb,comparator4UniqueIdentifier);Hope this might give you some idea of how to go about.:)
REGARDS,
RaHuL