sort in a list

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vincent.fayolle@gmail.com - 19 Sep 2005 22:06 GMT

I have list that contains other lists

like :

List1(
{"Vincent","DUBLIN",12}
{"Stephan","MORGAN",36}
{"Jule","STEPHEN",45}
{"Elisabeth","POQUIN",86}
)

How can I make a stuff like : List1.sort(0) to sort by Name or
List1.sort(2) to sort by age

Thanks

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Thomas Hawtin - 19 Sep 2005 22:45 GMT

> I have list that contains other lists

> List1(
> {"Vincent","DUBLIN",12}
> {"Stephan","MORGAN",36}
> {"Jule","STEPHEN",45}
> {"Elisabeth","POQUIN",86}
> )

I suggest you don't do that. Instead introduce a class to represent a
person.

> How can I make a stuff like : List1.sort(0) to sort by Name or
> List1.sort(2) to sort by age

You should use the Collections.sort(List,Comparator) method. You will
need to write a java.util.Comparator implementation that compares the
required field.

Tom Hawtin

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Unemployed English Java programmer
http://jroller.com/page/tackline/

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Alan Krueger - 20 Sep 2005 03:45 GMT

>> I have list that contains other lists
>> List1(
[quoted text clipped - 6 lines]
> I suggest you don't do that. Instead introduce a class to represent a
> person.

Since this looks an awful lot like a homework assignment, it might be
deliberate. A great way to show why some approach is better is to make
someone do it the hard way first.

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sort in a list

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