Should [1, 2, 1] be converted to [[1], [2], [1]] or to [[1, 1], [2]]?
[1, 2, 1]
[[1], [2], [1]]
[[1, 1], [2]]
To [[1], [2], [1]]
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Should
[1, 2, 1]be converted to[[1], [2], [1]]or to[[1, 1], [2]]?To [[1], [2], [1]]