Filter Unique Positive Numbers from an Array

You're tasked with creating a system that filters out negative and duplicate numbers from a list of data. The system should only retain unique positive numbers from the input. This is important for a feature that requires clean and precise data input.

Instructions:

• Write a function named uniqueArr that takes one parameter:

  • arr: An array of integers, which can include both positive and negative numbers.

• The function should return a new array that includes only unique positive numbers (greater than 0) from the input array.

Note: Only use the map, filter, or reduce methods, or a combination of these methods, to solve the problem. Do not use loops to iterate or perform the operation.

Example 1

Input: uniqueArr([4, 4, -2, 0, 2, 9, 9]);
Output: [4, 2, 9]

Example 2

Input: uniqueArr([-10, -20, -30]);
Output: []

Example 3

Input: uniqueArr([5, -3, 6, -8, 5, 1, 6]);
Output: [5, 6, 1]