Remove the white spaces (trailing and leading) from the input variable
Remove the polynomials that have positive real elements of their roots.
Add two numbers
Given a 4x4 matrix, swap the two middle columns
Min of a Matrix
Find a Pythagorean triple
Determine whether the string elements are alphabatic or alphanumeric or numeric digit or the other catagories
Justify the character string in center with proportional fonts
Whether the input is vector?
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