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Shell Programming and Scripting
awk permutations and combinations
Post 302990859 by daPeach on Wednesday 1st of February 2017 05:18:15 PM
02-01-2017
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Hello All,
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$ cat key.txt
#ID1 Start
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#ID2 Start
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Hello Scrutinizer / Group ,
The shell script of awk that Scrutinizer made calculate all possible permutations in this case 3125 (5 numbers) but i want to have only the 126 possible combination. For now it does not matter the specific order of the combination numbers.
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Dear all, could you please help me with awk please?
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a d
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The number of lines is unknown before reading the file.
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Input:
A|1
B|2
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B+D|6
C+D|7
A+B+C|6
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6
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Hi,
I'm trying to write an awk function that returns all possible permutations of n items chosen in a list of m items. For example, given the input "a,b,c,d,e" and 3, the function should return the following :
a a a
a a b
a a c
a b a
a b b
...
c a a
c a b
...
e e c
e e d
e e e
(125... (21 Replies)
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LEARN ABOUT PLAN9
man
MAN(1) General Commands Manual MAN(1) NAME
man, lookman - print or find pages of this manual SYNOPSIS
man [ option ... ] [ section ... ] title ... lookman key ... DESCRIPTION
Man locates and prints pages of this manual named title in the specified sections. Title is given in lower case. Each section is a num- ber; pages marked (2S), for example, belong to chapter 2. If no section is specified, pages in all sections are printed. Any name from the NAME section at the top of the page will serve as a title. The options are: -p Run proof(1) on the specified man pages. -t Run troff and send its output to standard output. -n (Default) Print the pages on the standard output using nroff. Lookman prints the names of all manual sections that contain all of the key words given on the command line. FILES
/sys/man/?/* troff source for manual; this page is /sys/man/1/man /sys/man/?/INDEX indices searched to find pages corresponding to titles /sys/lib/man/secindex command to make an index for a given section /sys/lib/man/lookman/index index for lookman SOURCE
/rc/bin/man /rc/bin/lookman SEE ALSO
proof(1) BUGS
The manual was intended to be typeset; some detail is sacrificed on text terminals. There is no automatic mechanism to keep the indices up to date. Except for special cases, it doesn't recognize things that should be run through tbl and/or eqn. MAN(1)