Find differences in two arrays with duplicates

Asked Nov 02 '20 at 12:35

Active Nov 02 '20 at 12:39

Viewed 50 times

I have two arrays for example

a1 = ["1","2","7","7"];
a2 = ["1","2","7"];

I have to write function in plain javascript to find diferrences . I do not have any streams, list etc..

My code is

lastproducts = new List();
   for (var i = 0; i < a1.length; i++) {

  if (a2.indexOf(a1[i]) == -1) {
    lastproducts.insertIntoList(lastproducts.listLength,a1[i])}
    }
    return lastproducts;
}

The problem is that this code doesn't know the difference. I'd like you to spot a duplicate, and return in this case "7" ;

Can You help me ? Thank You

edited Nov 02 '20 at 12:39

riorio

6,500
7
47
100

asked Nov 02 '20 at 12:35

Grafik Krystian

1

Of course javascript my bad – Grafik Krystian Nov 02 '20 at 12:41
what is your expected output from those 2 inputs? could you also include a few more examples? – Chase Nov 02 '20 at 12:41

Find differences in two arrays with duplicates

0 Answers0