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Fastest way to list combinations [message #80824]

Fri, 13 July 2012 13:51

antar3s86
Messages: 8
Registered: June 2012

Junior Member

Hi

I have to solve a problem which includes listing all possible combinations to form a triplet for a given number of objects.

Say you have the objects:
a,b,c,d,e, so in total 5 which gives you 5!/(2!*3!) = 10 possibilities to list them without any doubles:

abc
abd
abe
acd
ace
ade
bcd
bce
bde
cde

I have solved this problem for any number (well up to some computer limit anyway) in three FOR loops but for large numbers this is rather small...

can you think of a better way than using loops to list all these possibilites?

thanks!!
:)

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