I think that with this kind of problem, you can process in two steps.
A first easy problem with small N (to test perms for example). And a harder problem with big N, which
oblige to find another algorithm.
Return the Fibonacci Sequence
Replace May with April
Rotate a Matrix by 90 degrees
Matrix with different incremental runs
Getting the indices from a matrice
I've got the power! (Inspired by Project Euler problem 29)
S-T-R-E-T-C-H I-T O-U-T
Reindex a vector
The cake is a lie...
Sums of Multiple Pairs of Triangular Numbers
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