Sorting a 2d array in ruby
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arr = [[1,2,8], [3,8,4], [9,2,10], [0,1,3]]arr.sort! { |a, b| a.min <=> b.min }
[[0, 1, 3], [1, 2, 8], [9, 2, 10], [3, 8, 4]] 0 0
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