Given a set, we need to find the maximum and minimum possible product among all subsets of the set.
Example 1:
Input :
arr[] = {1, 2, 3};
Output :
Maximum product = 6
Minimum product = 1
Explanation :
Maximum product is obtained by multiplying
2, 3
Minimum product is obtained by multiplying
1

Example 2:
Input :
arr[] = {4, -2, 5};
Output :
Maximum product = 20
Minimum product = -40
Explanation :
Maximum product is obtained by multiplying
4 5
Minimum product is obtained by multiplying
4, -2, 5

Example 3:
Input :
arr[] = {-4, -2, 3, 7, 5, 0, 1};
Output :
Maximum product = 840
Minimum product = -420
Explanation :
Maximum product is obtained by multiplying
-4, -2, 3, 7, 5
Minimum product is obtained by multiplying
-4, 3, 7
Your Task:
You don't need to read input or print anything. Your task is to complete the function getMaxandMinProduct() which takes the array arr[] and its size N as inputs and returns the maximum product and minimum subset product in an vector/array/list of size 2.
Expected Time Complexity: O(N)
Expected Auxiliary Space: O(1)
Constraints:
1 ≤ N ≤ 20
-9 ≤ A[i] ≤ 9

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