test is a given integer number is Happy of not?
answer 1 if yes or 0 is no
sorry for that.
Find relatively common elements in matrix rows
Project Euler: Problem 7, Nth prime
Similar Triangles - find the height of the tree
Multiply a column by a row
Convert vector datasets to plot with imagesc instead of scatter
Tony's trick for duplicating an mx1 vector n times
Magic Concentric Circles
provide the numerical answer to these number questions...
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