Perl Merge file
问题 I have 3 or multiple files I need to merge, the data looks like this.. file 1 0334.45656 0334.45678 0335.67899 file 2 0334.89765 0335.12346 0335.56789 file 3 0334.12345 0335.45678 0335.98764 Expected output in file 4, 0334.89765 0334.89765 0334.89765 0334.12345 0335.67899 0335.12346 0335.56789 0335.45678 0335.98764 So far I have tried but data in 4rth file does not come in sorted order, #!/usr/bin/perl my %hash; my $outFile = "outFile.txt"; foreach $file(@ARGV) { print "$file\n"; open (IN, "