All possible combinations from all elements in an array

[RR_QQ]

hello! has anyone ever come a cross this problem? I need to output all the possible combinations of elements in an array.

For example, say I need to output all the different combinations for the array

array('1', '2', '3')

The output would be:

123
132
213
231
312
321

Of course, the number of elements in the array can be N in size - undertermined.

Any help will be greatly appreciated!!

[TacticalPenguin]

Think while loops and for loops.

[Weedpacket]

(The word you want to Google for is "permutations").

Or think recursively: to find all the possible permutations of n elements, find all the possible permutations of n-1 elements, and then find all the ways of inserting the nth element into each of those permutations.

Have a look at this ordering:
321
231
213
312
132
123
See where the '3's are and see what you get if you remove them.