swapVars(x,y)

Function Description:
This function swaps the a pair of input variables, provided they are of
the same size (shape).

AUTHOR: Sugato Ray | Created on: 12-AUG-2017 | ray.sugato[at]gmail.com

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PLEASE ACKNOWLEDGE THE AUTHOR IF YOU USE THIS CODE
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NOTE: X = y and Y = x. This function enables you to write the following
expression (equivalent to Tuples concept in Python).

[X,Y] = swapVars(X,Y);

EXAMPLE:
[X,Y] = swapVars(X,Y);

Check the following steps for step-by-step clarity and fact-checking:
xx = ones(3,3)
yy = zeros(3,3)
[xx,yy] = swapVars(xx,yy)
Note: This function works similar to: 'deal' function
[yy,xx] = deal(xx,yy)