Really, you should have a link between what directions you're looking, looking up and backwards aren't technically a pair, should really be look up/down or forward/back.
Swap the input arguments
Back to basics 26 - Keywords
Generate a vector like 1,2,2,3,3,3,4,4,4,4
Return 'on' or 'off'
Is It a Palindrome?
Skip by a multiple
Product of Array
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