NumPy List Creation, Append, and Removal

Algorithm:

1. Import NumPy library
2. Create initial array with values [10, 20, 30, 40, 50]
3. Print original array
4. Append single element 60 using np.append()
5. Print array after single append
6. Append multiple elements [70, 80, 90] using np.append()
7. Print array after multiple append
8. Remove element at index 2 using np.delete()
9. Print array after single deletion
10. Remove elements at indices 0 and 1 using np.delete()
11. Print final array

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Thanks for visiting my blog! I’m a student just like you, sharing what I learn to help others with Python programming. I hope my posts are useful for your studies! 😊

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— Abhin Krishna, S01, EB Department, MEC

Pseudocode:

IMPORT numpy as np

# Create array
array = CREATE_ARRAY([10, 20, 30, 40, 50])
PRINT "Original Array:", array

# Append single element
array = APPEND(array, 60)
PRINT "Array after appending 60:", array

# Append multiple elements
array = APPEND(array, [70, 80, 90])
PRINT "Array after appending [70, 80, 90]:", array

# Remove single element
array = DELETE(array, index 2)
PRINT "Array after removing element at index 2:", array

# Remove multiple elements
array = DELETE(array, indices [0, 1])
PRINT "Final array:", array

Program:

import numpy as np

# 1. Creating a NumPy array
# Create a NumPy array (which is similar to a list in Python)
array = np.array([10, 20, 30, 40, 50])
print("Original Array:", array)

# 2. Appending Elements to the List
# NumPy doesn't have an append method like Python lists, but we can use np.append
# Appending a single element
array = np.append(array, 60)
print("Array after appending 60:", array)

# Appending multiple elements
array = np.append(array, [70, 80, 90])
print("Array after appending [70, 80, 90]:", array)

# 3. Removing Elements from the List
# NumPy doesn't have a remove method like Python lists, but we can use np.delete
# Removing an element by index
array = np.delete(array, 2)  # Removes the element at index 2 (30 in this case)
print("Array after removing the element at index 2:", array)

# Removing multiple elements by indices
array = np.delete(array, [0, 1])  # Removes elements at index 0 and 1
print("Array after removing elements at indices 0 and 1:", array)

Flowchart:

flowchart TD A([Start]) --> B[[Import NumPy]] B --> C[Create array with values 10,20,30,40,50] C --> D[/Print original array/] D --> E[Append single element 60] E --> F[/Print array/] F --> G[Append multiple elements 70,80,90] G --> H[/Print array/] H --> I[Remove element at index 2] I --> J[/Print array/] J --> K[Remove elements at indices 0,1] K --> L[/Print final array/] L --> M([End])

Important!
If you find any mistakes in my code or flowchart, please comment below this post. I will be happy to correct them and clear up any doubts you may have.

Flowchart Image: