﻿ NumPy: Create a 2-dimensional array of size 2 x 3, composed of 4-byte integer elements - w3resource # NumPy: Create a 2-dimensional array of size 2 x 3, composed of 4-byte integer elements

## NumPy: Array Object Exercise-170 with Solution

Create a 2-dimensional array of size 2 x 3, composed of 4-byte integer elements. Write a NumPy program to find the number of occurrences of a sequence in the said array.

Sample Solution:

Python Code:

``````import numpy as np
np_array = np.array([[1, 2, 3], [2, 1, 2]], np.int32)
print("Original Numpy array:")
print(np_array)
print("Type: ",type(np_array))
print("Sequence: 1,2",)
result = repr(np_array).count("1, 2")
print("Number of occurrences of the said sequence:",result)
```
```

Sample Output:

```Original Numpy array:
[[1 2 3]
[2 1 2]]
Type:  <class 'numpy.ndarray'>
Sequence: 1,2
Number of occurrences of the said sequence: 2
```

Pictorial Presentation: Python Code Editor:

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## Python: Tips of the Day

Set comprehension:

```>>> m = {x ** 2 for x in range(5)}
>>> m
{0, 1, 4, 9, 16}
```