This is where MATLAB based question will be
@Vipresh Gangwal: there is no need to publish test problems. You can click the Unpublish button on the problem's edit page to remove it from public view until it is complete. Also, you can, and should, supply a reference solution and use the "Test reference solution" button on the edit page to ensure that the problem is solvable and properly functioning before it is published.
surface of a spherical planet
Back to basics 21 - Matrix replicating
Set the array elements whose value is 13 to 0
Rounding off numbers to n decimals
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