用python编写99乘法口诀表
时间: 2023-09-10 20:05:34 浏览: 71
### 回答1:
可以使用下面的代码编写99乘法口诀表:
```python
for i in range(1, 10):
for j in range(1, i+1):
print(f"{j}*{i}={i*j}", end="\t")
print()
```
这段代码使用两个for循环, 外层循环枚举i(1-9), 内层循环枚举j(1-i), 打印i*j的结果.
### 回答2:
要使用Python编写99乘法口诀表,可以使用嵌套循环来完成。首先,我们需要使用一个循环从1到9迭代行数,另外一个循环从1到当前行数迭代列数。在每次迭代时,将当前的行数乘以列数,并打印输出结果。以下是实现此功能的代码:
```python
for i in range(1, 10):
for j in range(1, i+1):
result = i * j
print(f"{i} * {j} = {result}", end="\t")
print()
```
运行以上代码会产生下面的输出:
```
1 * 1 = 1
2 * 1 = 2 2 * 2 = 4
3 * 1 = 3 3 * 2 = 6 3 * 3 = 9
4 * 1 = 4 4 * 2 = 8 4 * 3 = 12 4 * 4 = 16
5 * 1 = 5 5 * 2 = 10 5 * 3 = 15 5 * 4 = 20 5 * 5 = 25
6 * 1 = 6 6 * 2 = 12 6 * 3 = 18 6 * 4 = 24 6 * 5 = 30 6 * 6 = 36
7 * 1 = 7 7 * 2 = 14 7 * 3 = 21 7 * 4 = 28 7 * 5 = 35 7 * 6 = 42 7 * 7 = 49
8 * 1 = 8 8 * 2 = 16 8 * 3 = 24 8 * 4 = 32 8 * 5 = 40 8 * 6 = 48 8 * 7 = 56 8 * 8 = 64
9 * 1 = 9 9 * 2 = 18 9 * 3 = 27 9 * 4 = 36 9 * 5 = 45 9 * 6 = 54 9 * 7 = 63 9 * 8 = 72 9 * 9 = 81
```
这段代码使用了两个嵌套循环来生成乘法口诀表。外层循环控制行数(1到9),而内层循环控制列数(1到当前行数)。在每个内层循环中,先计算当前行数乘以当前列数的结果,然后使用`print()`函数输出。`end="\t"`用于在每行的表达式之间添加一个制表符,以确保结果整齐对齐。最后,使用一个空的`print()`语句来打印换行符,以使下一行显示在新行上。
### 回答3:
可以通过使用嵌套循环来编写Python的99乘法口诀表。以下是示例代码:
```python
for i in range(1, 10):
for j in range(1, i + 1):
print(f"{j} × {i} = {i * j}\t", end='')
print()
```
运行以上代码,将会得到输出:
```
1 × 1 = 1
1 × 2 = 2 2 × 2 = 4
1 × 3 = 3 2 × 3 = 6 3 × 3 = 9
1 × 4 = 4 2 × 4 = 8 3 × 4 = 12 4 × 4 = 16
1 × 5 = 5 2 × 5 = 10 3 × 5 = 15 4 × 5 = 20 5 × 5 = 25
1 × 6 = 6 2 × 6 = 12 3 × 6 = 18 4 × 6 = 24 5 × 6 = 30 6 × 6 = 36
1 × 7 = 7 2 × 7 = 14 3 × 7 = 21 4 × 7 = 28 5 × 7 = 35 6 × 7 = 42 7 × 7 = 49
1 × 8 = 8 2 × 8 = 16 3 × 8 = 24 4 × 8 = 32 5 × 8 = 40 6 × 8 = 48 7 × 8 = 56 8 × 8 = 64
1 × 9 = 9 2 × 9 = 18 3 × 9 = 27 4 × 9 = 36 5 × 9 = 45 6 × 9 = 54 7 × 9 = 63 8 × 9 = 72 9 × 9 = 81
```
以上代码使用两层循环,外层循环用于控制被乘数,内层循环用于控制乘数。在每一次内层循环完成后,使用`print()`函数打印换行符,以便输出下一行的乘法结果。使用`\t`在每个乘法表达式之间添加制表符,以保持对齐。最后的结果即为99乘法口诀表。