How can i make an array pick random and unique elements?

[ItsHoloXD]

I have an array of 7 strings, and i want to pick 5 of them that are all different from each other. How can i achieve that? I tried using for loop and while but i can’t figure it out. Even shuffle doesn’t seem to work.

[ClockworkOcean]

You just need to shuffle, and then loop from 1 to 5. What is not working out?

[3dRaven]

I’d also add a contains test before adding to the result array. If the result array already contains the shuffled number, then shuffle until it’s unique.

Just because it’s random doesn’t mean that in 5 tries you can’t get a duplicate, unless you would work on a copy of the array and remove the random element each shuffle.

[ItsHoloXD]

Sorry but i really cannot figure it out, where am i wrong?

So i’ll explain how i see this. I make an array, then shuffle it. After that i start a for loop from 0 to 4, and set a new array with a get connected to the index in order to get them in their respective index order after shuffle. Then i “convert it to an array?”, and add that to the new array. The final print is testing purposes, and obviously im wrong in this example because it’s not working. I think the problem is the get, which doesn’t seem to do exactly what i want, but i can’t seem to find any other node that works better.

[ClockworkOcean]

Make the array and put it in a variable. The way have it here, you’re making a array every time you pick anything from it

[ItsHoloXD]

So i need to add 1 variable per array pick?

[ClockworkOcean]

Make array → variable → shuffle → everything else

At the moment, every time around the loop, this line gets called

and ‘make array’ is called.

That’s why you need to put the output of make array into a variable. Then just use the variable.

[ItsHoloXD]

Like this? Then in the loop body what do i need to do?

[ClockworkOcean]

Correct

In the loop use the variable you’ve made. Do the get from the variable.

[ItsHoloXD]

Then what?

[ClockworkOcean]

Like this

[ItsHoloXD]

I understand what youre saying but i want to save the picks in a new array

[ClockworkOcean]

Ok. This bit does nothing

You want to make an array of what was taken from the original?

[ItsHoloXD]

I want to pick from the array of 7 elements, 5 random elements that are unique and add them to a new array

[ClockworkOcean]

[ClockworkOcean]

It works for you?

[ItsHoloXD]

Yes, thanks!