Engineering, 13.09.2019 01:30 nnaomii
Write a function {position xs y} that returns the first position of y in the list xs. the positions in a list start with 1. for example, {position [a b c] c} returns 3 and {position [a b c b] b} returns 2. try two versions: 1) one that assumes that y is an element of xs and 2) one that returns 0, if y does not occur in xs
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Write a function {position xs y} that returns the first position of y in the list xs. the positions...
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