输出10行的杨辉三角 - 二项式的n次方展开系数
1
1 1
1 2 1
1 3 3 1
1 4 6 4 1
… … …
def main(): num = int(input('Number of rows: ')) yh = [[]] * num for row in range(len(yh)): yh[row] = [None] * (row + 1) for col in range(len(yh[row])): if col == 0 or col == row: yh[row][col] = 1 else: yh[row][col] = yh[row - 1][col] + yh[row - 1][col - 1] print(yh[row][col], end='t') print()if __name__ == '__main__': main()