x is a vector of undetermined length
You are to replace every 3rd element with the number 4, example:
x = [11 23 34 43 2 31 6 34 5 45 26 7 78];
output = [11 23 4 43 2 4 6 34 4 45 26 4 78];
Make sure the code accounts for varying vector lengths
In view of the recent spate of trivial problems with no test suite to speak of, thanks for making the effort of providing a proper test suite and a slightly less trivial problem.
Sum of diagonal of a square matrix
select the primes of a vector
Matlab Basics - Convert a row vector to a column vector
Matlab Basics - Create a row vector
Matlab Basics - Absolute Value
Matlab Basics II - Log and natural log
Matlab Basics - Rounding I
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