> I am interested in getting all possible combinations of 10-letter without changing their positions in the string

Easy! w/o changing positions there is only one combination!

More questions?

Cheers Rolf

( addicted to the Perl Programming Language)

update

or are you looking for this technique?

Re: Substitution of a particular letter in all combinations of positions in word (see inside)

In reply to Re: How can one get all possible combinations of a string without changing positions & using window size? by LanX
in thread How can one get all possible combinations of a string without changing positions & using window size? by supriyoch_2008

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