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 ]
Really found a lot of trouble to find the solution.
But could not find how someone could solve it just using a size of 7.
Please, I need your help to solve this problem, ChanXy.
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