DistinctSort
Medium 
Given an array of integers, return the array sorted and with all duplicates removed.
Parameter(s):
- arr: an array of integers
Returns:
- array: an array of sorted, distinct integers
Constraints:
arr ≠ null1 ≤ arr.length ≤ 1000-2147483647 ≤ arr[i] ≤ 2147483647
Example 1:
Input:
[5,4,3,2,1]Output:
[1,2,3,4,5]Example 2:
Input:
[3,2,2,1]Output:
[1,2,3]Example 3:
Input:
[1,1,2,2,3,3]Output:
[1,2,3]