Leetcode 879 Solution

This article provides solution to leetcode question 879 (maximize-distance-to-closest-person)
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https://leetcode.com/problems/maximize-distance-to-closest-person

Solution

class Solution {
public:
    int maxDistToClosest(vector<int>& seats) {
        int first_one_pos = -1;
        int last_one_pos = -1;
        int max_gap = 0;

        for (int i = 0; i < seats.size(); i++)
        {
            if (seats[i] == 1)
            {
                if (last_one_pos != -1)
                    max_gap = max(i - last_one_pos - 1, max_gap);

                if (first_one_pos == -1)
                    first_one_pos = i;
                last_one_pos = i;
            }
        }

        return max((max_gap - 1) / 2 + 1, max(first_one_pos, (int)seats.size() - last_one_pos - 1));
    }
};