test is a given integer number is Happy of not?
answer 1 if yes or 0 is no
sorry for that.
Triangle Numbers Below N
Back to basics 4 - Search Path
Basic arrays operations.
Replace every 3rd element in a vector with 4
factorial of a number x
Convert a Cell Array into an Array
provide the numerical answer to these number questions...
remove nans fast
Convert vector datasets to plot with imagesc instead of scatter
Create numeric palindromes and their square roots
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