I'm not sure what is the point of eliminating 'ifs'? At any rate they can be easily replaced by e.g. 'while' loops, so in my opinion you should either eliminate both of them or none.
Again, the best way to generate such a sequence is using depth-first search or recursion. By prohibiting the usage of IFs, all solutions are inefficient (because we can't cut the tree, and are forced to follow all branches).
Renaming a field in a structure array
Given an unsigned integer x, find the largest y by rearranging the bits in x
Sum all integers from 1 to 2^n
Is this matrix orthogonal?
What's Your BMI?
Project Euler: Problem 14 Longest Collatz sequence(harder version)
Determine if input is a Narcissistic number
Seperate array to small section according to its index position
Put m balls into n boxes
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