Cumulative sum of a NumPy array

Python Pandas Numpy: Exercise-26 with Solution

Calculate the cumulative sum of a NumPy array.

Sample Solution:

Python Code:

import numpy as np

# Create a sample NumPy array
nums = np.array([1, 2, 3, -4, 5])

# Calculate the cumulative sum
cumulative_sum = np.cumsum(nums)

# Display the cumulative sum
print(cumulative_sum)

Output:

[1 3 6 2 7]

Explanation:

Here's a breakdown of the above code:

• First we create a sample NumPy array "nums".
• The np.cumsum(nums) function calculates the cumulative sum of the elements in the array.
• The resulting "cumulative_sum" is a NumPy array containing the cumulative sums.
• The result is printed, showing the cumulative sum of the array.

Flowchart:

Python Code Editor:

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