Solution: Boats to Save People

Statement

A big ship with numerous passengers is sinking, and there is a need to evacuate these people with the minimum number of life-saving boats. Each boat can carry, at most, two persons however, the weight of the people cannot exceed the carrying weight limit of the boat.

We are given an array, people, where people[i] is the weight of the $i^{th}$ person, and an infinite number of boats, where each boat can carry a maximum weight, ...