99乘法表

for i in range(1,10):
    for j in range(1,i+1):
        print(‘%d*%d=%d‘%(j,i,i*j),end=‘\t‘)
    print(‘‘)

for x in range(9,0,-1):
    for y in range(1,x+1):
        print(‘%d*%d=%d‘%(y,x,x*y),end=‘\t‘)
    print(‘‘)

print (‘\n‘.join([‘ ‘.join([‘%d*%d=%d‘ % (y,x,x*y) for y in range(1,x+1)]) for x in range(1,10)]))