Removing combinations from array

[alpha993 121]

I've been scratching my head at a problem with arrays recently but I can't seem to find a decent solution to it.  So let's say I have an array that looks like this: [[1,2],[2,1],[3,4],[4,3]]. In this case, the first two elements are combinations of each other, same as the last two. What I am trying to do is to filter this array to remove such combinations and leave only one of them so that the array would look like [[1,2],[3,4]] instead. I'd greatly appreciate any help with this!

[pierremgi 4739]

What do you think about:

_array = [[1,2],[2,1],["zz","tt"],[4,3],["tt","zz"],[3,2,1]];

_result= [];
{_e = +_x; _e sort TRUE; _result pushBackUnique _e} forEach _array;   // [[1,2],["tt","zz"],[3,4],[1,2,3]]

Spoiler

 

Consolidated for array of anything:

_array = [[1,2],[2,1],["zz","tt"],[4,3],["tt","zz"],[3,2,1],6,"hello"];

_result= [];
{_e = _x; if (_e isEqualType []) then {_e = +_x; _e sort TRUE}; _result pushBackUnique _e} forEach _array;

 

 

[alpha993 121]

Just tested it and it works wonders. Thanks so much!