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Full Discussion: awk - function to return permutations of n items out of m
Top Forums Shell Programming and Scripting awk - function to return permutations of n items out of m Post 303028489 by cjnwl on Wednesday 9th of January 2019 11:28:54 AM
Old 01-09-2019
Thanks for your prompt response. I didn't post my code as it's not really much use. I've also searched this forum, but none of the threads about combinations and/or permutations does exactly what I need.

Here's what I have so far. It's not in a function as yet, and the loops are hard-coded two deep. The variable len isn't used at all.
Code:
BEGIN {
  list = "a,b,c,d,e"
  len = 3
  sep = ","
  n = split(list,words,sep)
#  for (i in words) print i, words[i]
  for (i=1;i<=n;i++) {
    for (j=1;j<=n;j++) {
	  print words[i], words[j]
	}
  }
}

Ultimately, I need to be able to access and manipulate the results in an array.

Thanks,
Chris
 

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LEARN ABOUT ULTRIX

french

WORDS(5)                                                     Linux Programmers Manual                                                     WORDS(5)

NAME

       french - a list of french words

DESCRIPTION

       /usr/share/dict/french is an ASCII file which contains an alphabetic list of words, one per line.

FILES

       /etc/alternatives/dictionary  is  a  symbolic  link  to  a  /usr/share/dict/<language>  file.   /usr/share/dict/words is a symbolic link to
       /etc/alternatives/dictionary, and is the name by which other software should refer to the system word list.  See update-alternatives(8) for
       more information.

       The directory /usr/share/dict can contain word lists for many languages, with name of the language in English, e.g., /usr/share/dict/ameri-
       can-english and /usr/share/dict/danish contain respectively lists of English and Danish words if they exist.  Such lists  should  be  coded
       using the ISO 8859-1 character set encoding.

SEE ALSO

       ispell(1), update-alternatives(8), and the Filesystem Hierarchy Standard.

HISTORY

       The words lists are not specific, and may be generated from any number of sources.

AUTHOR

       Word lists are collected and maintained by various authors.

Linux                                                              29 Sept 1998                                                           WORDS(5)
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