119_Pascals_triangle_ii

// https://leetcode.com/problems/pascals-triangle-ii/

class Solution {
    public List<Integer> getRow(int rowIndex) {
        List<Integer> list = new ArrayList<>();
        if (rowIndex < 0)
            return list;
        for (int i = 0; i < rowIndex + 1; i ++) {
            list.add(0, 1);
            // for (int k = 0; k < list.size(); k ++)
            //     System.out.print(list.get(k));
            // System.out.println();
            for (int j = 1; j < list.size() - 1; j ++) {
                list.set(j, list.get(j) + list.get(j + 1));
            }
        }
        return list;
    }
}