Write a function named n_copies that accepts an array of elements $arr
as a parameter and returns a new array $arr2, with each element value
$n from $arr replaced by $n consecutive copies of
the value $n at the same relative location in the array.
For example, if an array named $arr stores the following element values:
[3, 5, 0, 2, 2, -7, 0, 4]
Then the call of $arr2 = $n_copies($arr); should result in a new array
$arr2 containing the following elements:
[3, 3, 3, 5, 5, 5, 5, 5, 2, 2, 2, 2, 4, 4, 4, 4]
The idea is that the value 3 was replaced by three 3s; the 5 was replaced by five 5s; and so on.
Any element whose value is 0 or negative should not be kept in the returned array (as with 0 and -7 above).
Constraints:
-
In solving this problem, you must create a single new array to be returned, but
aside from that, do not create any other data structures such as temporary arrays or strings.
- You may use as many simple variables (such as integers) as you like.
