Python——九九乘法表

九九乘法表

(一)  for 循环

方法一：
    def multiply():
        for i in range(1,10):
            for n in range(1,i + 1):
                print("%d * %d = %d" % (n, i, n*i),end='   ')
            print('  ')
    multiply()
    
方法二：
def multiply():
    for i in range(1, 10):
        print("    ")
        for n in range(1,1+i):
            print("%d * %d = %d" % (n, i, n * i), end='     ')
multiply()
​
方法三：
for i in range(1, 10):
    for n in range(1, i + 1):
        print("%d * %d = %d" % (n, i, n * i), end='   ')
    print('   ')
​

(二) 用 while 循环

i = 1
while i < 10:
    a = 1
    while a <= i:
        print('%d * %d = %d ' % (i, a, a * i),end="   ")
        a = a + 1
    print(" ")
    i = i + 1