Java - Sorting results

Question

I have an equation : A = b^2 + 4*c^2

I change a value of 'b' and 'c' like this: b=1,2,3,4,5,... and c=1,2,3,4,5,... and I put them in equation.

I want to create a table of results (as an output), something like this:

However, I want to have table sorted from smallest value of A towards the biggest. Note that it can occur that different pairs of b and c give the same A. I want to create table like that for 10 different values of A.

My problem is that I don't know how to 'link' value A with proper value of b and c, when I try to sort the table

create a class that holds the three variables

tckmn
– tckmn

2013-05-14 21:25:20 +00:00
Commented May 14, 2013 at 21:25 — tckmn
– tckmn, Commented May 14, 2013 at 21:25

RiaD · Accepted Answer · 2013-05-14 21:28:03Z

5

You may create a class that represent three values and then sort.

class Tuple implement Comparable<Tuple>{

     int a, b, c;
     //....
     int compareTo(Tuple tuple) {
         return Integer.compare(a, tuple.a);
     }

}

Tuple[] tuples;
// ...
Arrays.sort(tuples);

answered May 14, 2013 at 21:28

RiaD

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Comments

thatidiotguy · Accepted Answer · 2013-05-14 21:25:20Z

1

One Simple method:

Make a 3 column array, and when you sort by the A column, take the rest of the row with you.

There are many possibilities.

answered May 14, 2013 at 21:25

thatidiotguy

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