Sorting numbers stored in variables

No, you can indeed use a sort() method. It however belongs to the Arrays class which is a convenience class with static methods to deal with arrays.

http://java.sun.com/j2se/1.4.2/docs/api/java/util/Arrays.html

sort(int[] a)

Sorts the specified array of ints into ascending numerical order.

TuringPesta at 2007-7-15 0:35:38 >

> I have them stored as

>

> int num1, num2, num3, ..etc.

>

> the values are stored in them already.

>

> if I didn't use array. what way could I sort them.

I'm a little confused by what you're trying to do. Do you want the lowest value in num1, then next in num2, ... the highest value in num5?

If so then do like prometheuzz said in reply 6, and then sort the array. Then copy array[0] into num1, array[1] into num2, etc.

But unless for some reason you really need them to be stored in individual variables, it will probably be easier to only deal with the arrays.

hunter9000a at 2007-7-15 0:35:38 >

> > if I didn't use array. what way could I sort

> them.

>

> With a lot if() statements!

> Better use an array.

Actually, if you want to be clever (but pointless, lol) you can do

int a, b, c;

when sorting:

obj[] objA = {a, b, c}

Arrays.sort(objA, Comparator);

TuringPesta at 2007-7-15 0:35:38 >

> ...

>

> I want it to print ; 1, 2, 3, 4, 6

>

> I just thought I might be able to do it with array

Yes, it can. Here's a small example:

int num1 = 2, num2 = 1, num3 = 6, num4 = 3, num5 = 4;

int[] array = {num1, num2, num3, num4, num5};

java.util.Arrays.sort(array);

System.out.print(java.util.Arrays.toString(array));

prometheuzza at 2007-7-15 0:35:38 >

Of course the arrays solution is the best, but if this is some sort

of useless exercise, a bubble sort can be implemented with

only 4 if statements. No arrays, no collections.

boolean changed;

int temp;

do {

if ( num1 > num2 ) { temp = num1; num1 = num2; num2 = temp; changed = true }

if ( num2 > num3 ) { temp = num2; num2 = num3; num3 = temp; changed = true }

if ( num3 > num4 ) { temp = num3; num3 = num4; num4 = temp; changed = true }

if ( num4 > num5 ) { temp = num4; num4 = num5; num5 = temp; changed = true }

} while ( changed );

I do not claim that it scales well for more than 5 values!

baftosa at 2007-7-21 11:20:07 >

> You cannot invoke methods on arrays.

<pbs>

Arrays are class instances and can have methods invoked upon them.int[] vals = {1, 3, 5, 7, 9};

System.out.println(vals.toString());

System.out.println(vals.getClass().getName());

</pbs>

Message was edited by:

cafal

cafala at 2007-7-21 11:20:07 >

> Hey there, I'm curious, how would you sort 3 integers

> using only five if's and five elses and no other

> operators besides a < (less than) operator? Some help

> would be much appreciated! thanks. ishan

I can tell you that you don't do it by resurrecting old threads.

Mr_Evila at 2007-7-21 11:20:07 >