本帖最后由 CUer 于 2011-6-5 22:44 编辑
原文件a.txt:- aaa
- bbb
- aaa
- aaa
- ccc
- ddd
- bbb
- ddd
复制代码 希望得到的b.txt:复制代码 这个代码虽然可以删除重复行,但是把顺打乱了:- use strict;
- use warnings;
- open(IN,"a.txt");
- my %list;
- while (<IN>) {
- $list{$_}++;
- }
- close IN;
- open(OUT,">b.txt");
- foreach (keys %list) {
- print OUT;
- }
- close OUT;
复制代码
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