Problem 1825. Find all vampire fangs

Created by Andrew Newell

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A <a href = "http://en.wikipedia.org/wiki/Vampire_number">vampire number</a> is a
number v that is the product of two numbers x and y such that the
following conditions are satisfied:<ol><li>at most one of x and y are divisible by 10;</li><li>x and y have the same number of digits; and</li><li>The digits in v consist of the digits of x and y (including any
repetitions).</li></ol>If these conditions are met, x and y are known as "fangs" of v. For
example, 1260 is a vampire number because 1260 = 21*60, so 21 and 60 are
the fangs.Write a function that returns all the pairs of fangs for a given number.
The output is a matrix in which each row is a pair; the values in the
first row should be in increasing order. If it is not a vampire number,
it will return empty arrays.Example:<pre class="language-matlab">disp(vampire_factor(125460))
</pre><pre> 204 615
 246 510</pre>See also:
 <a href = "http://www.mathworks.com/matlabcentral/cody/problems/1804-fangs-of-a-vampire-number">Problem 1804. Fangs of a vampire number</a> and and <a href = "http://www.mathworks.com/matlabcentral/cody/problems/1826-find-vampire-numbers">1826. Find vampire numbers</a>.

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Nadee Seneviratne on 5 Aug 2020

Interesting problem :D

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Problem 1825. Find all vampire fangs

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