Good day, dear Monks!

Unfortinatly I use Perl rather rarely. At the current moment I'm dealing with genomic coordinates. I have two large arrays with data. The fist contains some coordinates and the second contains distances. Among coordinates there are unique ones and repeats. Although distance value for every coordinate is unique. I would like to compose the final set of unique coordinates and corresponding distances. The main thing is excluding the repeating coordinates. The condition is the following: to chose those pare of coordinate - distance which has the smallest distance value.

So the example of the data the following:

coordinate  distance
567         344  
1345        567
2346        78   
3456        67 
3456        789
4678        45    
5349        6
6700        124 
6700        50
8964        560

[download]

I have written some very simple script

$coord = 'coordinate.txt';  
open(COORD, $coord) || die("Couldn't read file $coord\n"); 
$dist = 'dist.txt'; 
open(DIST, $dist) || die("Couldn't read file $dist\n"); 

     @d = <DIST>;
     @c = <COORD>;
                        
     for ( $i = 0; $i <= 13; $i++ ) { 
    
 
  if ( $c[$i] != $c[$i+1] ) 
  
  {
  printf  "%d  %d\n",  $c[$i], $d[$i]; 
  }     
  
  }

[download]

It selects the last line of repeat without comparing the distance values. How would you advise to change it to get only unique coordinetes-distances pairs. And to chose those pare of coordinate - distance which has the smallest distance value if there are repetative coordinates.

So for those data, given earlier I try to get the output like this: 
coordinate  distance
567         344  
1345        567
2346        78   
3456        67 
4678        45    
5349        6
6700        50
8964        560

[download]

Thank you in advance!

In reply to Repeats exclusion by Grig

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