881. Leetcode Solution in cpp

class Solution {
 public:
  int numRescueBoats(vector<int>& people, int limit) {
    int ans = 0;

    sort(begin(people), end(people));

    for (int i = 0, j = people.size() - 1; i <= j; ++ans) {
      int remain = limit - people[j--];
      if (people[i] <= remain)
        ++i;
    }

    return ans;
  }
};

leetcode

challenge

Here is the link for the problem:
https://leetcode.com/problems/boats-to-save-people/