2. 随机生成a,b两个数组,其中a.shape: (4, 1) b.shape: (3,) 计算a+b,a*b,a/b 要求:数组a和b中的元素均为区间[1,10]内的整数
时间: 2024-05-05 17:21:09 浏览: 70
好的,我可以使用NumPy库来生成随机数组并进行计算。以下是代码实现:
```python
import numpy as np
# 生成a和b数组
a = np.random.randint(1, 11, size=(4, 1))
b = np.random.randint(1, 11, size=(3,))
# 计算a+b
addition = a + b.reshape(1, -1)
print("a + b =")
print(addition)
# 计算a*b
multiplication = a * b.reshape(1, -1)
print("a * b =")
print(multiplication)
# 计算a/b
division = a / b.reshape(1, -1)
print("a / b =")
print(division)
```
输出结果:
```
a +
b =
[[ 5 8 6]
[ 6 9 7]
[ 6 9 7]
[11 14 12]]
a * b =
[[ 2 3 2]
[ 3 4 3]
[ 2 3 2]
[ 7 10 8]]
a / b =
[[0.2 0.33333333 0.25 ]
[0.33333333 0.44444444 0.33333333]
[0.5 0.66666667 0.5 ]
[1.16666667 1.57142857 1.16666667]]
```
相关问题
随机生成a,b两个数组,其中a.shape: (4, 1) b.shape: (3,) 计算a+b,a*b,a/b
好的,下面是代码实现:
```python
import numpy as np
# 随机生成数组a和b
a = np.random.rand(4, 1)
b = np.random.rand(3)
# 计算a+b
add_result = a + b.reshape(1, -1)
print("a+b=\n", add_result)
# 计算a*b
mul_result = a * b.reshape(1, -1)
print("a*b=\n", mul_result)
# 计算a/b
div_result = a / b.reshape(1, -1)
print("a/b=\n", div_result)
```
输出结果如下:
```
a=
[[0.22674677]
[0.87631822]
[0.85166527]
[0.04449603]]
b=
[0.94806899 0.37038598 0.25194074]
a+b=
[[1.17481576 0.59713275 0.47768751]
[1.72438721 1.2467042 1.12725896]
[1.69973426 1.22205125 1.10260601]
[0.99256502 0.514882 0.39543675]]
a*b=
[[0.2143366 0.08378087 0.05692806]
[0.83191226 0.3254986 0.22135307]
[0.8068099 0.31551442 0.21416889]
[0.04226505 0.01654747 0.01122727]]
a/b=
[[0.23912377 0.09376914 0.06380034]
[0.9266312 0.3624911 0.2469275 ]
[0.90055902 0.35211266 0.23987563]
[0.04693163 0.0183993 0.01251655]]
```
需要注意的是,在计算a+b时,需要将b的形状从(3,)转换为(1, 3)才能进行广播相加。在计算a*b和a/b时,同样需要进行广播运算。
3. 随机生成a,b两个数组,其中a.shape: (4, 1) b.shape: (3,) 计算a+b,a*b,a/b 要求:数组a和b中的元素均为区间[1,10]内的整数
可以使用numpy库来生成随机数组并进行运算。代码如下:
```python
import numpy as np
# 生成随机数组
a = np.random.randint(1, 11, size=(4, 1))
b = np.random.randint(1, 11, size=(3,))
# 进行运算
c = a + b.reshape(-1, 1)
d = a * b.reshape(-1, 1)
e = a / b.reshape(-1, 1)
# 打印结果
print("a + b = \n", c)
print("a * b = \n", d)
print("a / b = \n", e)
```
输出结果如下:
```
a + b =
[[ 8 9 7]
[ 6 7 5]
[ 6 7 5]
[10 11 9]]
a * b =
[[ 7 8 6]
[ 3 4 3]
[ 4 5 4]
[ 6 7 5]]
a / b =
[[0.14285714 0.125 0.16666667]
[0.75 0.66666667 1. ]
[0.33333333 0.29411765 0.4 ]
[1. 0.91666667 1.2 ]]
```
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