Since Cody, I dislike for-loops, but your solution is way simpler than my own algorithm. Mission accomplished...
Nevertheless, I would hope for a non-looped piece of code. Let's see in phase 3.
Longest run of consecutive numbers
Replace multiples of 5 with NaN
Is this triangle right-angled?
Recaman Sequence - III
Convert a substructure reference string into a valid definition structure for subsref and subsasgn
Create a random vector of integers with given sum
Convert nested struct-array to numeric array
Operate on matrices of unequal, yet similar, size
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