NumPy: Get the values and indices of the elements that are bigger than 10 in a given array

Last update on August 29 2025 12:50:01 (UTC/GMT +8 hours)

Elements >10 & Their Indices

Write a NumPy program to get the values and indices of the elements that are bigger than 10 in a given array.

Pictorial Presentation:

NumPy: Get the values and indices of the elements that are bigger than 10 in a given array

Sample Solution:

Python Code:

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

# Creating a NumPy array
x = np.array([[0, 10, 20], [20, 30, 40]])

# Displaying the original array
print("Original array: ")
print(x)

# Filtering and displaying values in the array that are greater than 10
print("Values bigger than 10 =", x[x > 10])

# Displaying indices of elements that are greater than 10 using np.nonzero()
print("Their indices are ", np.nonzero(x > 10))

Sample Output:

Original array:                                                        
[[ 0 10 20]                                                            
 [20 30 40]]                                                           
Values bigger than 10 = [20 20 30 40]                                  
Their indices are  (array([0, 1, 1, 1]), array([2, 0, 1, 2]))

Explanation:

In the above code –

x = np.array([[0, 10, 20], [20, 30, 40]]): x is a 2D NumPy array with two rows and three columns.

print("Values bigger than 10 =", x[x>10]): This line prints the extracted values that are greater than 10.

print("Their indices are ", np.nonzero(x > 10)): This line prints the indices of the values greater than 10 in the array x.

For more Practice: Solve these Related Problems:

Identify elements in a 2D array that are greater than 10 using np.where and validate the returned indices.
Create a function that prints both the values and their indices for all elements exceeding a given threshold.
Test the function on an array where some rows have no elements greater than 10 and handle the empty case.
Compare the indices obtained from np.where with those determined by iterating through the array manually.

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