LeetCode & Q119-Pascal's Triangle II-Easy

Description:

Given an index k, return the kth row of the Pascal's triangle.

For example, given k = 3,
Return [1,3,3,1].

my Solution:

public class Solution {
    public List<Integer> getRow(int rowIndex) {
        List<List<Integer>> list = new ArrayList<List<Integer>>();
        ArrayList<Integer> row = new ArrayList<Integer>();
        for (int i = 0; i <= rowIndex; i++) {
            row.add(0, 1);
            for (int j = 1; j < i; j++) {
                row.set(j, row.get(j) + row.get(j+1));
            }
        }
        return row;
    }
}