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fix(learn): add output type verbiage (#40589)

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Co-authored-by: Randell Dawson <5313213+RandellDawson@users.noreply.github.com>
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Kim Leung
2021-02-01 07:11:15 -07:00
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commit a37d5f5817
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curriculum/challenges/english/10-coding-interview-prep/rosetta-code/top-rank-per-group.md
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@ -48,6 +48,8 @@ one could rank the top-rated movie in each genre by calling
`topRankPerGroup(1, data, 'genre', 'rating')`
The function should return an array with an array for each group containing the top `n` objects.
# --hints--
`topRankPerGroup` should be a function.