Covering some basic topics I haven't seen elsewhere on Cody.
Return a cell array of all MATLAB keywords
It would be better if the solution didn't contain the answer. Also, in the problem statement you should probably specify that the keywords must be sorted alphabetically (and appear only once each). Otherwise a cell array such as {'if', 'for', 'else', ...} would satisfy the problem statement, but fail the Test Suite — as demonstrated in Solution 1329165.
Find all elements less than 0 or greater than 10 and replace them with NaN
10889 Solvers
306 Solvers
869 Solvers
184 Solvers
Find out missing number from a vector of 9 elements
199 Solvers