What is the purpose of the flipud function in MATLAB?

In Matlab, the flipud function is used to flip a matrix or vector vertically. Specifically, it reverses the order of each row in the matrix, making the first row become the last row, the second row become the second to last row, and so on. For vectors, the flipud function reverses the order of the elements, making the first element become the last element, the second element become the second to last element, and so on.