Need C Algorithm

Doug Gwyn <gwyn> gwyn at brl-tgr.ARPA
Wed Dec 19 04:46:44 AEST 1984

There is a permutation generator in the Collected Algorithms of ACM
(long ago, so probably in the bound Vol. 1).

You can also design a permutation generator by recursive application
of the rule:
	Perm( N ) = { N-inserted-at-each-position-in-Perm( n-1 ) }
This makes a pleasant programming exercise.

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