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duplicate values

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# 1  
Old 10-16-2012
duplicate values
Hi,

How to enumerate duplicate values, without sorting the file.

example

1 1
2 1
3 1
1 2
2 2
3 2
1 3
2 3
3 3

Where the first column have the repetead values without sorting,

I would like to get the value of the times that the value is repetead , as I show in the 2 column

Thanks in advance.
# 2  
Old 10-16-2012
I presume the input file only has one column? Try:
Code:
awk '{print $1, ++C[$1]}' file

This User Gave Thanks to Scrutinizer For This Post:
jiam912
# 3  
Old 10-16-2012
Thanks for your help, yes the file has only one column,,
I have try the code , but looks like there is a syntax error.. Please advise

---------- Post updated at 03:26 AM ---------- Previous update was at 03:22 AM ----------

Sorry was my mistake,, The code works fine... Thanks again
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