Hi list,
I'm facing a little combination problem in which I'm getting lost...
I have a string tof n letters (n can range from 2 to 20)
and I need to produce all possible combinations of n-1 to 2 letters.
for example :
string : ABCD
combinations to output :
ABC
ABD
ACD
BCD
AB
AC
AD
BC
BD
CD
I'm trying to do it with nested loops but don't get anywhere...
Any idea ?
Thanks,
JB
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