0881. Boats to Save People
https://leetcode.com/problems/boats-to-save-people
Description
You are given an array people
where people[i]
is the weight of the ith
person, and an infinite number of boats where each boat can carry a maximum weight of limit
. Each boat carries at most two people at the same time, provided the sum of the weight of those people is at most limit
.
Return the minimum number of boats to carry every given person.
Example 1:
**Input:** people = [1,2], limit = 3
**Output:** 1
**Explanation:** 1 boat (1, 2)
Example 2:
**Input:** people = [3,2,2,1], limit = 3
**Output:** 3
**Explanation:** 3 boats (1, 2), (2) and (3)
Example 3:
**Input:** people = [3,5,3,4], limit = 5
**Output:** 4
**Explanation:** 4 boats (3), (3), (4), (5)
Constraints:
1 <= people.length <= 5 * 104
1 <= people[i] <= limit <= 3 * 104
ac
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