Subtract arrays

Is it possible to subtract array1 [1, 2, 3] from array2[1,2,3,4,5,6] and get array3[4,5,6]

Thanks for the help!

Try something like this:

code:

---

arrA=[1,2,3];

arrB=[1,2,3,4,5,6];





function subtractArray(arr1,arr2){

	for(var i in arr1){

		var item=arr1[i];

		for(var j in arr2){

			if(arr2[i]==item){

				arr2.splice(i,1);

			}

		}

		

	}

	trace(arr2);

}



subtractArray(arrA,arrB);

---

K.

Hi Deadbeat,

This code is working fine in AS2 but not in AS3. I cannot figure out how to solve it. Could you please tell me the solution.

Thanks,
Salim

I have no idea how it worked in AS2, but the variable i should've been replaced by variable j after the second for loop:

Actionscript Code:

var arrA:Array = [1,2,3];
var arrB:Array = [1,2,3,4,5,6];

function subtractArray(arr1,arr2){
    
    for(var i in arr1){
        
        var item=arr1[i];
        
        for(var j in arr2){
            
            if(arr2[j]==item){
                
                arr2.splice(j,1);
            
            }
        
        }
    
    }
    
    trace(arr2);

}

subtractArray(arrA,arrB);

Actionscript Code:

var arrA:Array = [1, 12, 3, 8, 9, 10, 21];
var arrB:Array = [1, 2, 3, 4, 5, 6];

trace(arrA);
trace(arrB);
var arr:Array=isElement(arrA,arrB);
trace(arrA);
trace(arr)
trace(arrB);

function isElement(a:Array,b:Array):Array {
    for (var i in a) {
        for (var j in b) {
            if (a[i]==b[j]) {
                b.splice(j,1);
            }
        }
    }
    return b;
}

Function without dependency


poltuda

Thank you Nig 13 and Poltuda :)