Sparse Matrix

Linear Algebra

Difficulty: 4 | Problem written by mesakarghm
Problem reported in interviews at


Sparse matrix is a matrix which contains very few non-zero elements. If a matrix contains more zeros than (row * col ) / 2, it is called a sparse matrix. For a given matrix, represented as a 2D array, create a function check_sparse_matrix(mat) that checks if the matrix is sparse or not. 

The function should return True if the matrix is sparse and False otherwise. 

Sample Input:
<class 'numpy.ndarray'>
mat: [[0 0 9] [5 0 8] [7 0 0]]

Expected Output:
<class 'bool'>

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numpy has been already imported as np (import numpy as np)