@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.
Check if sorted
First non-zero element in each column
Set the array elements whose value is 13 to 0
07 - Common functions and indexing 6
Divisible by 3
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