﻿ NumPy: Insert a space between characters of all the elements of a given array - w3resource # NumPy: Insert a space between characters of all the elements of a given array

## NumPy String: Exercise-5 with Solution

Write a NumPy program to insert a space between characters of all the elements of a given array.

Sample Solution:-

Python Code:

``````import numpy as np
x = np.array(['python exercises', 'PHP', 'java', 'C++'], dtype=np.str)
print("Original Array:")
print(x)
r = np.char.join(" ", x)
print(r)
```
```

Sample Input:

```(['python exercises', 'PHP', 'java', 'C++'], dtype=np.str)
```

Sample Output:

```Original Array:
['python exercises' 'PHP' 'java' 'C++']
['p y t h o n   e x e r c i s e s' 'P H P' 'j a v a' 'C + +']
```

Pictorial Presentation: Python Code Editor:

Have another way to solve this solution? Contribute your code (and comments) through Disqus.

What is the difficulty level of this exercise?

Test your Python skills with w3resource's quiz

﻿

## Python: Tips of the Day

Getting the last element of a list:

some_list[-1] is the shortest and most Pythonic.

In fact, you can do much more with this syntax. The some_list[-n] syntax gets the nth-to-last element. So some_list[-1] gets the last element, some_list[-2] gets the second to last, etc, all the way down to some_list[-len(some_list)], which gives you the first element.

You can also set list elements in this way. For instance:

```>>> some_list = [1, 2, 3]
>>> some_list[-1] = 5 # Set the last element
>>> some_list[-2] = 3 # Set the second to last element
>>> some_list
[1, 3, 5]
```

Note that getting a list item by index will raise an IndexError if the expected item doesn't exist. This means that some_list[-1] will raise an exception if some_list is empty, because an empty list can't have a last element.

Ref: https://bit.ly/3d8TfFP