Question

trace (suallar); – is written 2 times
1st time – HERE IT SHOWS ALL THE ELEMENTS OF THE ARRAY suallar
2nd time – BUT HERE THIS ARRAY SEEMS TO BE EMPTY, EVEN THOUGH I DIDN’T MANIPULATE WITH IT OR MAKE IT EQUAL TO ANYTHING I MANIPULATE WITH IN BETWEEN

var suallar:Array = new Array();
var i:int;
var cavablar:Array=new Array();

suallar.push(["sual1", "duz1", "sehv11", "sevh12", "sevh13","sevh14"]);
suallar.push(["sual2", "duz2", "sehv21", "sevh22","sevh23","sevh24" ]);
suallar.push(["sual3", "duz3", "sehv31", "sevh32","sevh33","sevh34"]);
suallar.push(["sual4", "duz4", "sehv41", "sevh42","sevh43","sevh44"]);
suallar.push(["sual5", "duz5", "sehv51", "sevh52","sevh53","sevh54"]);



var cavablar_temp:Array = suallar.concat();

for (i=0; i<suallar.length; i++){
    cavablar_temp[i].shift();
}

trace (suallar);


for (i=0; i<suallar.length;i++){

var number_array:Array = cavablar_temp[i];

var final_array:Array = [];

var count_selected:int = 5;
for (var u = 0; u < count_selected; u++)
{
    if (number_array.length == 0)
    {
        break;
    }
    else
    {
        final_array.push(number_array.splice(Math.floor(Math.random() * number_array.length), 1)[0]);

    }   

}
    cavablar.push(final_array);}

trace(cavablar.join("\n"));

trace (suallar); 

Answer 1

As per the Array.splice() documentation:

Adds elements to and removes elements from an array. This method modifies the array without making a copy.

When you do number_array.splice() in the middle of your loop, you’re modifying the original arrays you pushed to suallar.

Take a look at Array.slice(), which returns a new array without modifying the original.