打印99乘法表

1 * 9 = 9   2 * 9 = 18  3 * 9 = 27  4 * 9 = 36  5 * 9 = 45  6 * 9 = 54  7 * 9 = 63  8 * 9 = 72  9 * 9 = 81
1 * 8 = 8   2 * 8 = 16  3 * 8 = 24  4 * 8 = 32  5 * 8 = 40  6 * 8 = 48  7 * 8 = 56  8 * 8 = 64
1 * 7 = 7   2 * 7 = 14  3 * 7 = 21  4 * 7 = 28  5 * 7 = 35  6 * 7 = 42  7 * 7 = 49
1 * 6 = 6   2 * 6 = 12  3 * 6 = 18  4 * 6 = 24  5 * 6 = 30  6 * 6 = 36
1 * 5 = 5   2 * 5 = 10  3 * 5 = 15  4 * 5 = 20  5 * 5 = 25
1 * 4 = 4   2 * 4 = 8   3 * 4 = 12  4 * 4 = 16
1 * 3 = 3   2 * 3 = 6   3 * 3 = 9
1 * 2 = 2   2 * 2 = 4
1 * 1 = 1

i = 9
while i >= 1:
    j = 1
    while j <= i:
        print(‘%d * %d = %-3d‘%(j,i,j*i),end=‘ ‘)
        j += 1
    print()
    i -= 1