[Solved] Sum of arrays of different size [closed]

Question

You can use something like this:

a.flat_map{|x| x.in_groups_of(a.max_by(&:size).size, 0)}.transpose.map(&:sum)

Or this:

a.max_by(&:size).map.with_index{|_, i| a.sum{|x| x[i]||0}}

Accepted Answer

You can use something like this:

a.flat_map{|x| x.in_groups_of(a.max_by(&:size).size, 0)}.transpose.map(&:sum)

Or this:

a.max_by(&:size).map.with_index{|_, i| a.sum{|x| x[i]||0}}