NumPy: Find common values between two arrays

Last update on December 21 2024 08:30:45 (UTC/GMT +8 hours)

Common Values in Two Arrays

Write a NumPy program to find common values between two arrays.

Pictorial Presentation:

Sample Solution:-

Python Code:

# Importing the NumPy library with an alias 'np'
import numpy as np

# Creating an array 'array1' using NumPy
array1 = np.array([0, 10, 20, 40, 60])

# Printing the contents of 'array1'
print("Array1: ", array1)

# Creating a Python list 'array2'
array2 = [10, 30, 40]

# Printing the contents of 'array2'
print("Array2: ", array2)

# Finding the common values between 'array1' and 'array2'
print("Common values between two arrays:")
print(np.intersect1d(array1, array2))

Sample Output:

Array1:  [ 0 10 20 40 60]                                              
Array2:  [10, 30, 40]                                                  
Common values between two arrays:                                      
[10 40]

Explanation:

In the above code –

array1 = np.array([0, 10, 20, 40, 60]): Creates a NumPy array with elements 0, 10, 20, 40, and 60.

array2 = [10, 30, 40]: Creates a Python list with elements 10, 30, and 40.

print(np.intersect1d(array1, array2)): The np.intersect1d function returns a sorted array containing the common elements of the two input arrays, ‘array1’ and ‘array2’. In this case, the common elements are 10 and 40, so the output will be [10 40].

Python-Numpy Code Editor: