Leetcode 题目解析之 Pascal's Triangle II

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

For example, given k = 3,

Return 1,3,3,1.

    public List<Integer> getRow(int rowIndex) {
        Integer[] row = new Integer[rowIndex + 1];
        Arrays.fill(row, 1);
        for (int i = 0; i < rowIndex - 1; i++) {
            for (int j = i + 1; j >= 1; j--) {
                row[j] = row[j] + row[j - 1];
            }
        }
        return Arrays.asList(row);
    }