if x = 4, the solution will be: y = 1^2+2^2+3^2+4^2=1+4+9+16 = 30.
Find the longest sequence of 1's in a binary sequence.
2 b | ~ 2 b
Determine the length of a string of characters
Matlab Basics II - Extract last 3 elements of a vector
concatenate the elements
No more zeros
sum all digits
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