#九九乘法表一
for i in range(1,10):
    j =9
    while j >= i:
        print(i,"*",j,"=",j*i,end="\t")
        j -=1
    print()

print("第二种格式")

#九九乘法表二
for i in range(1,10):
    j = 1
    while j <= i:
        print(j,"*",i,"=",i*j,end="\t")
        j += 1
    print()

运行结果: