通过for循环和while循环实现九九乘法口诀

for循环

for i in range(1, 10):  # 限制在1到10的范围内
    for j in range(1, i + 1):
        result = i * j
        print(f"{j} * {i} = {result:2}", end="  ")
    print()

while循环

i = 1
while i <= 9:
    j = 1
    while j <= i:
        result = i * j
        print(f"{j} * {i} = {result:2}", end="  ")
        j += 1
    print()
    i += 1