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deleted 15 characters in body

edited Apr 27 at 19:35

Ruby, 5447 bytes

->a{a.slice_when(&:!=).group_by(&:size).min_by{_1}[1]min[1]}

->a{a.slice_when(&:!=).group_by(&:size).min_by{_1}[1]}

->a{a.slice_when(&:!=).group_by(&:size).min[1]}

answered Apr 27 at 17:21

->a{a.slice_when(&:!=).group_by(&:size).min_by{_1}[1]}