Count the number of primes less than 'n'.
Nice test cases!
With a more robust Test Suite many/most of the submissions would fail for ignoring the Problem Statement instruction that primes must be less than n. Please add test cases in which the input x (or "n") is itself a prime.
Replace NaNs with the number that appears to its left in the row.
Find out missing number from a vector of 9 elements
matrix of natural number
Matlab Basics II - Minimum
Display negative numbers
Create a constant offset.
Determine the roots of a cubic equation
Energy of an object
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