rbt <[EMAIL PROTECTED]> wrote:
> Say I have a list that has 3 letters in it:
>
> ['a', 'b', 'c']
>
> I want to print all the possible 4 digit combinations of those 3
> letters:
>
> 4^3 = 64
>
> aaaa
> abaa
> aaba
> aaab
> acaa
> aaca
> aaac
> ...
>
> What is the most efficient way to do this?
Since you're doing cross product (ie. 3*3*3*3), manual loop of 4 level
deep would be the fastest in terms of algorithm. C vs. Python is
implementation detail.
In Bash shell, this is one-liner,
echo {a,b,c}{a,b,c}{a,b,c}{a,b,c}
or maybe two,
abc=(a b c)
echo {^abc}{^abc}{^abc}{^abc}
--
William Park <[EMAIL PROTECTED]>, Toronto, Canada
ThinFlash: Linux thin-client on USB key (flash) drive
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http://freshmeat.net/projects/bashdiff/
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