How can I split a 6 element array into 3 random arrays?

Questions & Answers
1

Hi, I’ve got an array storing 6 GameObjects and I want to create 3 new arrays, each one containing 2 random GameObjects from the main one.

Example - how I want it to be:

var mainArray : GameObject[] = [obj1, obj2, obj3, obj4, obj5, obj6];

var firstPair : GameObject[];
var secondPair : GameObject[];
var thirdPair : GameObject[];

function Start() {

    firstPair = 2 random objs from mainArray;
    secondPair = 2 random objs except the first pair;
    thirdPair = 2 random objs except the first and the second pair;

}

I tried everything and I have no idea what to do.

3

One solution is to shuffle the array and assign them in order from the shuffled array:

var mainArray : GameObject[] = [obj1, obj2, obj3, obj4, obj5, obj6];
 
var firstPair  : GameObject[] = new GameObject[2];
var secondPair : GameObject[] = new GameObject[2];
var thirdPair  : GameObject[] = new GameObject[2];
 
function Start() {

   var temp : GameObject;

   for (var i : int = 0; i < mainArray.Length - 1; i++) {
        var ii : int = Random.Range(i, mainArray.Length);
        var temp = mainArray*;*

mainArray = mainArray[ii];
mainArray[ii] = temp;
}

firstPair[0] = mainArray[0];
firstPair[1] = mainArray[1];
secondPair[0] = mainArray[2];
secondPair[1] = mainArray[3];
thirdPair[0] = mainArray[4];
thirdPair[1] = mainArray[5];
}
Alternately, you can put the game objects in a generic List and pull them out at random, deleting them from the list as each is used.

2

I wouldnt like to write code if it is not neccessary but i will write with text how would i do it:

1, make a list with the values 1,2,3,4,5,6

for(int i = 1; i <=3; ++i) //if i==1 then add to firstPair etc... i will refer the current array with the name yourCurrentArray in the loop
{
    for(int j = 0; j<2; ++j)
    {
        2, get a random index between 0 and list.length
        3, yourCurrentArray[j] = mainArray[random index]
        4, remove mainArray[random index]
    }

}