Test case details

Preparation Code

<script> var a = []; for (var i = 0; i < 2000; i++) { a[i] = i; } </script>

Test cases

Test #1

var b = a.slice();

Test #2

var b = a.concat();

Test #3

var b = [].concat(a);

Test #4

var b = a.slice(0);