A perfect number occurs whent the sum of all divisors of a positive integer, except the number itself, equals the number.
28 = 1 + 2 + 4 + 7 + 14;
so return true
10 ~= 1 + 2 + 5
so return false
Determine whether a vector is monotonically increasing
Remove the two elements next to NaN value
Side of an equilateral triangle
Sum of the Matrix Elements
Return fibonacci sequence do not use loop and condition
Put m balls into n boxes (again)
Big Integer Sqrt
Project Euler: Problem 14 Longest Collatz sequence(harder version)
Make an anonymous function that has variable output
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