CSS/duparray.html at main · Snowil-tuscano/CSS · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
<html>

<body>
    <script>
        count = 0;
        var arr1 = []
        var arr = [10, 20, 20,10,20, 30, 20, 50, 50, 60, 60,];
        for (i = 0; i < arr.length; i++) {
            var duplicate = false;
            for (j = i + 1; j < arr.length; j++) {
                if (arr[i] == arr[j]) {
                    duplicate = true
                }
            }
            if (duplicate) {
                //check if duplicate number was already added to array
                if (!(arr1.includes(arr[i]))) {
                    arr1.push(arr[i])
                    count++;
                }
            }
        }
        document.write("Duplicate count: " + count + "<br>")
        document.write(arr1)
    </script>
</body>

</html>