0881 Boats to Save People

0881 Boats to Save People.py

class Solution:
    def numRescueBoats(self, people: List[int], limit: int) -> int:
        people.sort()
        l, r = 0, len(people) - 1
        res = 0
        while l <= r:
            if people[l] + people[r] <= limit: l += 1
            r -= 1
            res += 1
        
        return res