test is a given integer number is Happy of not?
answer 1 if yes or 0 is no
sorry for that.
Select every other element of a vector
All your base are belong to us
Project Euler: Problem 10, Sum of Primes
Return 'on' or 'off'
Create numeric palindromes and their square roots
Strange Number Algorithms
provide the numerical answer to these number questions...
Tony's trick for duplicating an mx1 vector n times
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