Given the vector A, return B in which all numbers in A are doubling. So for:
A = [ 1 5 8 ]
B = [ 1 1 5 5 8 8 ]
Project Euler: Problem 1, Multiples of 3 and 5
Back to basics 25 - Valid variable names
Cell Counting: How Many Draws?
Who has power to do everything in this world?
Find the dimensions of a matrix
Solving a quadratic equation
Divisors of an integer
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