Python杨辉三角索引k索引返回某行

Question

给定一个非负索引k，返回杨辉三角的第k行[n6]

Answer 1

class Solution:
    def getRow(self, rowIndex: int):
        result = []
        if rowIndex <= 0:
            return [1]
        for index1 in range(1, rowIndex + 2):
            data = []
            if index1 == 1:
                data.append(1)
            elif index1 == 2:
                data.append(1)
                data.append(1)
            else:
                for index2 in range(0, index1):
                    if index2 == 0:
                        data.append(1)
                    elif index2 > 0 and index2 < index1 - 1:
                        data.append(result[index1 - 2][index2 - 1] + result[index1 - 2][index2])
                    else:
                        data.append(1)
            result.append(data)
        row = result[rowIndex]
        return row


if __name__ == '__main__':
    k = int(input())
    print(Solution().getRow(k))

Answer 2

谢谢！