[Columbia-pm] sorting
Doug Leffert
furtiveone at gmail.com
Sun Nov 19 14:46:56 PST 2006
On 11/16/06, Gunz, Alexander J. <gunza at missouri.edu> wrote:
...
> How do you make it sort them like this:
>
> 1
> 2
> 3
> 10
> 21
> 135,152
> 20,000,000
...
> Can someone make my life easier?
>From 'perldoc -f sort':
"If SUBNAME or BLOCK is omitted, "sort"s in standard string comparison order."
So, use 'sort {$a <=> $b} @YOUR_ARRAY;
See the following debugger session for an example using your data
(DB<5> is where your expected sort occurs).
$ perl -de 42
Loading DB routines from perl5db.pl version 1.28
Editor support available.
Enter h or `h h' for help, or `man perldebug' for more help.
main::(-e:1): 42
DB<1> @n = (1,10,135_152,2,20_000_000,21,3);
DB<2> x @n
0 1
1 10
2 135152
3 2
4 20000000
5 21
6 3
DB<3> @sorted = sort @n;
DB<4> x @sorted;
0 1
1 10
2 135152
3 2
4 20000000
5 21
6 3
DB<5> @x = sort {$a <=> $b} @n;
DB<6> x @x
0 1
1 2
2 3
3 10
4 21
5 135152
6 20000000
Best,
/doug
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