A row vector is not a matrix...
Not very clear problem, flip vertically? horizontally? elementwise?
The problem is really to just reverse a row vector. A row vector happens to be a matrix, but so does a column vector, and two or more dimensional matrices. Saying, "reverse a matrix" is ambiguous.
Select every other element of a vector
Sum the elements in either diagonal of a square matrix
Generate a NaN...on purpose
Add two numbers
Length of a short side
Create the following sequence : 0 1 1 4 9 25 64 169 ...
Concatenate two strings
Find the area of the four walls
Find the square of the sum of the digits of a number
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