I have a table that produces the following results: 

  DIR     FILE_NAME
| 954  |   24088954 |
| 955  |   24052955 |
| 955  |   24111955 |
| 955  |   24130955 |
| 956  |   23159956 |
| 957  |   24133957 |
| 958  |   24131958 |
| 960  |   24093960 |
| 961  |   24033961 |
| 961  |   24129961 |
| 961  |   24130961 |

[download]

I am trying to create a hash of these values based on the directory:

955 -> 24052955, 24111955, 24130955
961 -> 24033961, 24122961, 24130961

I am guessing that I need to hash the directory, but then have an array as the value of the hash

The problem I have is that when I did 
$file_hash->{$dir}{push(@file_array,$file_name)};

[download]

I get duplicates 

foreach my $file_dir (sort (keys % {$file_hash}))
{
  foreach my $file (@file_array){
        print "$counter Directory: $file_dir $file\n";
        $counter++;
                                                                      
+                  } 
                                                                      
+          } 

1 Directory: 000 24090000
2 Directory: 000 24125002
3 Directory: 000 24011003
4 Directory: 000 24070003
5 Directory: 000 24082003
6 Directory: 000 24065005
7 Directory: 000 24070007
8 Directory: 000 24132007
9 Directory: 000 24041008

[download]
As you can see, the second record here doesn't belong (the last three digits of the file name correspond to the directory).

So it would seem that I need to pre-define 1000 different arrays, one for each directory, and then do an if statement to push the values into the approriate array,but I am sure there is a better way to handle this.

In reply to hash or arrays by Anonymous Monk

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