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Top Forums Shell Programming and Scripting Problem to print out record got smallest number in specific column Post 302890342 by cpp_beginner on Wednesday 26th of February 2014 08:39:41 AM
Old 02-26-2014
Problem to print out record got smallest number in specific column

Hi,

Anybody know how to print out the record that shown smallest number among column 3 and column 4
Case 1 Input :
Code:
37170   37196   77      51
37174   37195   73      52
37174   37194   73      53

Case 1 Output :
Code:
37170   37196   77      51

Case 2 Input :
Code:
469613  469660  73      120
469614  469659  74      119
469616  469657  76      117
469618  469655  78      115

Case 2 Output :
Code:
469613  469660  73      120

Case 3 Input :
Code:
648274  648296  239     261

Case 3 Output :
Code:
648274  648296  239     261

By comparing only column 3 and 4 in each case. I would like to print out only the line that got smallest number (eg. 51 in column 4, Case 1 is smallest; 73 in column 3, Case 2 is smallest).

If just only one record in the file, then just straight print it out. Since nothing to compare in column 3 or 4.

Thanks for any advice.
It seems like a bit complicated comparison Smilie
 

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Hash::Case::Upper(3pm)					User Contributed Perl Documentation				    Hash::Case::Upper(3pm)

NAME
Hash::Case::Upper - native hash with enforced lower cased keys INHERITANCE
Hash::Case::Upper is a Hash::Case is a Tie::StdHash SYNOPSIS
use Hash::Case::Upper; tie my(%uchash), 'Hash::Case::Upper'; $uchash{StraNGeKeY} = 3; print keys %uchash; # STRANGEKEY DESCRIPTION
Hash::Case::Upper extends Hash::Case, which lets you play various trics with hash keys. In this implementation, the fake hash is case insensitive and the keys stored in upper-case. METHODS
Constructors $obj->addHashData(HASH) See "Constructors" in Hash::Case $obj->addPairs(PAIRS) See "Constructors" in Hash::Case $obj->setHash(HASH) See "Constructors" in Hash::Case tie(HASH, 'Hash::Case::Upper', [VALUES,] OPTIONS) Define HASH to have only upper cased keys. The hash is initialized with the VALUES, specified as ref-array or ref-hash. Currently, there are no OPTIONS defined. SEE ALSO
This module is part of Hash-Case distribution version 1.02, built on March 09, 2012. Website: http://perl.overmeer.net/hash-case/ LICENSE
Copyrights 2002-2003,2007-2012 by Mark Overmeer. For other contributors see ChangeLog. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. See http://www.perl.com/perl/misc/Artistic.html perl v5.14.2 2012-03-09 Hash::Case::Upper(3pm)
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