As AnomalousMonk has pointed out, the way your data is formatted is important.

The way most programmers would expect to see your data is like this: 

2
3
3
3
5
7
8
12
...

[download]
If, instead, it looks like this: 
2 3 3 3 5 7 8 12 ...

[download]
then you have a problem .. or rather, it needs to be handled differently in your code.

For the second case, you need: 

my @data = split /\s+/,<$in>;

[download]

In addition, the way the "sort_num" is called has some issues in your code.

This is how it should be called: 

 my @new_sort = sort_num (@data);

[download]
And call it only ONCE.

        "Despite my privileged upbringing, I'm actually quite well-balanced. I have a chip on both shoulders."         - John Nash

In reply to Re^3: unxpected sort warnings while using sort by NetWallah
in thread unxpected sort warnings while using sort by perlynewby

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


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