1291 : 구구단

구구단 Python 코드

while True:
    a,b = map(int,input().split())
    if a<2 or a > 9 or b<2 or b > 9 : 
        print('INPUT ERROR!')
    else : break

for i in range(1,10):
    if a< b:
        for j in range(a,b+1):
            print("%d * %d = %2d " %(j,i,i*j),end = "  ")
    else:
        for j in range(a,b-1,-1):
            print("%d * %d = %2d " %(j,i,i*j),end = "  ")
    print()