99乘法表和倒三角99乘法表

#九九乘法表
for i in range(1,10):
    for j in range(1,i+1):
        print(j,"*",i,"=",i*j,end="\t",sep="")#end="\t",\t代表四个空格，一个tab键,sep=""去掉间隔
    print("")

#倒三角九九乘法表
for i in range(1,10):
    if i==1:
        print("")
    if 1<i<10:
        print(" "*7*(i-1),end="\t")
    for j in range(i,10):
        print(i,"*",j,"=",i*j,end="\t",sep="")
    print("")