[코테 풀이] Find the Highest Altitude

Q_1732) Find the Highest Altitude

출처 : https://leetcode.com/problems/find-the-highest-altitude/

There is a biker going on a road trip. The road trip consists of n + 1 points at different altitudes. The biker starts his trip on point 0 with altitude equal 0.

You are given an integer array gain of length n where gain[i] is the net gain in altitude between points i and i + 1 for all (0 <= i < n). Return the highest altitude of a point.

class Solution {
    public int largestAltitude(int[] gain) {
        ArrayList<Integer> arrayList = new ArrayList<>();
        arrayList.add(0);
        int ind = 1;
        for (int i : gain) {
            arrayList.add(arrayList.get(ind - 1) + i);
            ind++;
        }
        Collections.sort(arrayList);
        return arrayList.get(arrayList.size() - 1);
    }
}