📅  最后修改于: 2023-12-03 15:06:18.562000             🧑  作者: Mango
乘法表是学习数学时必须要掌握的基础内容,也是程序员在编写程序时常用到的工具之一。
Python是一种功能强大的编程语言,而且其语法简洁易懂,操作灵活,因此也被许多程序员用来编写实用工具。本文将为大家介绍如何用Python编写一个简单的乘法表程序。
这种方法最常见,也最容易理解。我们可以使用两个循环来分别控制行和列,用格式化字符串来输出结果。下面是代码实现(假设要输出乘法表的数字范围是 1 到 9,输出格式为 "%d × %d = %d"):
for i in range(1, 10):
for j in range(1, 10):
print("%d × %d = %d" % (i, j, i*j))
print()
输出结果如下:
1 × 1 = 1
1 × 2 = 2
1 × 3 = 3
1 × 4 = 4
1 × 5 = 5
1 × 6 = 6
1 × 7 = 7
1 × 8 = 8
1 × 9 = 9
2 × 1 = 2
2 × 2 = 4
2 × 3 = 6
2 × 4 = 8
2 × 5 = 10
2 × 6 = 12
2 × 7 = 14
2 × 8 = 16
2 × 9 = 18
3 × 1 = 3
3 × 2 = 6
3 × 3 = 9
3 × 4 = 12
3 × 5 = 15
3 × 6 = 18
3 × 7 = 21
3 × 8 = 24
3 × 9 = 27
4 × 1 = 4
4 × 2 = 8
4 × 3 = 12
4 × 4 = 16
4 × 5 = 20
4 × 6 = 24
4 × 7 = 28
4 × 8 = 32
4 × 9 = 36
5 × 1 = 5
5 × 2 = 10
5 × 3 = 15
5 × 4 = 20
5 × 5 = 25
5 × 6 = 30
5 × 7 = 35
5 × 8 = 40
5 × 9 = 45
6 × 1 = 6
6 × 2 = 12
6 × 3 = 18
6 × 4 = 24
6 × 5 = 30
6 × 6 = 36
6 × 7 = 42
6 × 8 = 48
6 × 9 = 54
7 × 1 = 7
7 × 2 = 14
7 × 3 = 21
7 × 4 = 28
7 × 5 = 35
7 × 6 = 42
7 × 7 = 49
7 × 8 = 56
7 × 9 = 63
8 × 1 = 8
8 × 2 = 16
8 × 3 = 24
8 × 4 = 32
8 × 5 = 40
8 × 6 = 48
8 × 7 = 56
8 × 8 = 64
8 × 9 = 72
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
第二种方法比较简单,只需要使用嵌套列表和一个循环即可。不过需要多余的空间存储列表,如果数字范围较大,则不太适用。下面是代码实现(假设要输出乘法表的数字范围是 1 到 9,输出格式为 "%d × %d = %d"):
m_table = [[i*j for j in range(1, 10)] for i in range(1, 10)]
for row in m_table:
for col in row:
print("%d × %d = %d" % (row.index(col)+1, col//(row.index(col)+1), col))
输出结果与第一种方法相同。
本文介绍了两种使用 Python 输出乘法表的方法,分别是使用两个循环和格式化字符串、使用嵌套列表和一个循环。不同的方法适用于不同的场合,可以根据需求自行选择。
for i in range(1, 10):
for j in range(1, 10):
print("%d × %d = %d" % (i, j, i*j))
print()
m_table = [[i*j for j in range(1, 10)] for i in range(1, 10)]
for row in m_table:
for col in row:
print("%d × %d = %d" % (row.index(col)+1, col//(row.index(col)+1), col))
# 乘法表python
## 简介
乘法表是学习数学时必须要掌握的基础内容,也是程序员在编写程序时常用到的工具之一。
Python是一种功能强大的编程语言,而且其语法简洁易懂,操作灵活,因此也被许多程序员用来编写实用工具。本文将为大家介绍如何用Python编写一个简单的乘法表程序。
## 实现方法
### 第一种方法
这种方法最常见,也最容易理解。我们可以使用两个循环来分别控制行和列,用格式化字符串来输出结果。下面是代码实现(假设要输出乘法表的数字范围是 1 到 9,输出格式为 "%d × %d = %d"):
```python
for i in range(1, 10):
for j in range(1, 10):
print("%d × %d = %d" % (i, j, i*j))
print()
输出结果如下:
1 × 1 = 1
1 × 2 = 2
1 × 3 = 3
1 × 4 = 4
1 × 5 = 5
1 × 6 = 6
1 × 7 = 7
1 × 8 = 8
1 × 9 = 9
2 × 1 = 2
2 × 2 = 4
2 × 3 = 6
2 × 4 = 8
2 × 5 = 10
2 × 6 = 12
2 × 7 = 14
2 × 8 = 16
2 × 9 = 18
3 × 1 = 3
3 × 2 = 6
3 × 3 = 9
3 × 4 = 12
3 × 5 = 15
3 × 6 = 18
3 × 7 = 21
3 × 8 = 24
3 × 9 = 27
4 × 1 = 4
4 × 2 = 8
4 × 3 = 12
4 × 4 = 16
4 × 5 = 20
4 × 6 = 24
4 × 7 = 28
4 × 8 = 32
4 × 9 = 36
5 × 1 = 5
5 × 2 = 10
5 × 3 = 15
5 × 4 = 20
5 × 5 = 25
5 × 6 = 30
5 × 7 = 35
5 × 8 = 40
5 × 9 = 45
6 × 1 = 6
6 × 2 = 12
6 × 3 = 18
6 × 4 = 24
6 × 5 = 30
6 × 6 = 36
6 × 7 = 42
6 × 8 = 48
6 × 9 = 54
7 × 1 = 7
7 × 2 = 14
7 × 3 = 21
7 × 4 = 28
7 × 5 = 35
7 × 6 = 42
7 × 7 = 49
7 × 8 = 56
7 × 9 = 63
8 × 1 = 8
8 × 2 = 16
8 × 3 = 24
8 × 4 = 32
8 × 5 = 40
8 × 6 = 48
8 × 7 = 56
8 × 8 = 64
8 × 9 = 72
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
第二种方法比较简单,只需要使用嵌套列表和一个循环即可。不过需要多余的空间存储列表,如果数字范围较大,则不太适用。下面是代码实现(假设要输出乘法表的数字范围是 1 到 9,输出格式为 "%d × %d = %d"):
m_table = [[i*j for j in range(1, 10)] for i in range(1, 10)]
for row in m_table:
for col in row:
print("%d × %d = %d" % (row.index(col)+1, col//(row.index(col)+1), col))
输出结果与第一种方法相同。
本文介绍了两种使用 Python 输出乘法表的方法,分别是使用两个循环和格式化字符串、使用嵌套列表和一个循环。不同的方法适用于不同的场合,可以根据需求自行选择。