假设我有一个数组@theArr,其中包含1,000个左右的元素,如下所示:
01 '12 16 sj.1012804p1012831.93.gz' 02 '12 16 sj.1012832p1012859.94.gz' 03 '12 16 sj.1012860p1012887.95.gz' 04 '12 16 sj.1012888p1012915.96.gz' 05 '12 16 sj.1012916p1012943.97.gz' 06 '12 16 sj.875352p875407.01.gz' 07 '12 16 sj.875408p875435.02.gz' 08 '12 16 sj.875436p875535.03.gz' 09 '12 16 sj.875536p875575.04.gz' 10 '12 16 sj.875576p875603.05.gz' 11 '12 16 sj.875604p875631.06.gz' 12 '12 16 sj.875632p875659.07.gz' 13 '12 16 sj.875660p875687.08.gz' 14 '12 16 sj.875688p875715.09.gz' 15 '12 16 sj.875716p875743.10.gz' ...
如果我的第一组数字(在“ sj。”和“ p”之间)始终是6位数字,那么我不会有问题。但是,当数字翻转为7位数字时,默认排序将停止,因为较大的7位数字位于较小的6位数字之前。
有没有办法告诉Perl在每个数组元素的字符串内按该数字排序?
看起来您需要Schwartzian变换:
#!/usr/bin/perl use strict; use warnings; my @a = <DATA>; print map { $_->[1] } #get the original value back sort { $a->[0] <=> $b->[0] } #sort arrayrefs numerically on the sort value map { /sj\.(.*?)p/; [$1, $_] } #build arrayref of the sort value and orig @a; __DATA__ 12 16 sj.1012804p1012831.93.gz 12 16 sj.1012832p1012859.94.gz 12 16 sj.1012860p1012887.95.gz 12 16 sj.1012888p1012915.96.gz 12 16 sj.1012916p1012943.97.gz 12 16 sj.875352p875407.01.gz 12 16 sj.875408p875435.02.gz 12 16 sj.875436p875535.03.gz 12 16 sj.875536p875575.04.gz 12 16 sj.875576p875603.05.gz 12 16 sj.875604p875631.06.gz 12 16 sj.875632p875659.07.gz 12 16 sj.875660p875687.08.gz 12 16 sj.875688p875715.09.gz 12 16 sj.875716p875743.10.gz