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JavaScript interview question
Chunk
easy10 min
Split an array into smaller groups of the requested size, keeping the original order.
Requirements
Implement chunk(array, size = 1). Each group has at most size elements; a final incomplete group is allowed.
Preserve element order. Return an empty array for an empty input or a size that is not a positive integer, including zero, negatives, fractions, NaN, and Infinity.
Return a new outer array and new group arrays without changing the input. Keep object references rather than deep-cloning values.
The input may contain any values. Preserve sparse slots within their corresponding groups.
