Amazon OA Optimizating Box Weight

An Amazon Fulfillment Associate has a set of items that need to be packed into two boxes. Given an integer array of the item weights (arr) to be packed, divide the item weights into two subsets, A and B, for packing into the associated boxes, while respecting the following conditions:
The intersection of A and B is null.
The union A and B is equal to the original array.
The number of elements in subset Ais minimal.
The sum of A's weights is greater than the sum of B's weights.
Return the subset A in increasing order where the sum of A's weights is greater than the sum of B's weights. If more than one subset A exists, return the one with the maximal total weight.

Input Format For Custom Testing
STDIN   Function
6 -> arr[] size n = 6
5 -> arr[] = [5, 3, 2, 4, 1, 2]

Sample Output

n = 6
arr = [5, 3, 2, 4, 1, 2]
The subset of A that satisfies the conditions is [4, 5]
A is minimal (size 2)
Sum(A) = (4 + 5) = 9 > Sum(B) = (1 + 2 + 2 + 3) = 8
The intersection of A and B is null and their union is equal to arr.
The subset A with the maximal sum is [4, 5].

More Amazon Online Assessment Questions 2021

Get one-to-one training from Google Facebook engineers

Top-notch Professionals

Learn from Facebook and Google senior engineers interviewed 100+ candidates.
Most recent interview questions and system design topics gathered from aonecode alumnus.
One-to-one online classes. Get feedbacks from real interviewers.

Customized Private Class

Already a coding expert? - Advance straight to hard interview topics of your interest.
New to the ground? - Develop basic coding skills with your own designated mentor.
Days before interview? - Focus on most important problems in target company question bank.