Re-stacking MovieClips in an Array

I was trying to make a similar thing with the game SameGame (ie. the block above the removed blocks fall downward). Before trying this with an Array that contains MovieClips, this code worked (tried it with int values). With MovieClips on the array, it seems not working the same way.

With int values, example:

popUp(0, 4): Before: 开发者_如何学Go1,2,3,4,5,6,7,8,9,10; After: 1,2,3,4,6,7,8,9,10

But with MovieClips:

popUp(0, 4): Before: 1,2,3,4,5,6,7,8,9,10; After; 1,2,3,4
// Assume the numbers are movieclips XD

Basically, it strips everything else, rather than just the said block >_<

Here's the whole method. Basically, two extra arrays juggle the values above the soon-to-be removed value, remove the value, then re-stack it to the original array.

What could be wrong with this? And am I doing the right thing for what I really wanted to emulate?

function popUp(col:uint, row:uint)
    {
        var tempStack:Array = new Array();
        var extraStack:Array = new Array();
        tempStack = IndexArray[col];
        removeChild(tempStack[0]);
        for(var ctr:uint = tempStack.length-(row+1); ctr > 0; ctr--)
        {
            removeChild(tempStack[ctr]);
            extraStack.push(tempStack.pop());
            trace(extraStack);
        }

        tempStack.pop();

        for(ctr = extraStack.length; ctr > 0; ctr--)
        {
            tempStack.push(extraStack.pop());
            //addChild(tempStack[ctr]);
        }

        IndexArray[col] = tempStack;
    }

PS: If it's not too much to ask, are there free step-by-step guides on making a SameGame in AS3 (I fear I might not be doing things right)? Thanks in advance =)

I think you just want to remove an element and have everything after that index shift down a place to fill what you removed. There's an inbuilt function for this called splice(start:uint, length:uint);

Parameters:
start - the index to start removing elements from
length - the amount of elements to remove

var ar:Array = ["hello","there","sir"];

ar.splice(1, 1);

ar is now -> ["hello", "sir"];

As per question:

Here's an example with different types of elements:

var ar:Array = [new MovieClip(), "some string", new Sprite(), 8];
ar.splice(2, 1);

trace(ar); // [object MovieClip], some string, 8

And further example to display the indexes being changed:

trace(ar[2]); // was [object Sprite], is now 8