Its simple. You have to reverse a given matrix.
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.
Project Euler: Problem 2, Sum of even Fibonacci
Replace multiples of 5 with NaN
Finding perimeter of a rectangle
Produce a sine wave
Find the area of the four walls
Concatenate two strings
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