[1,2]と[3,4]を足して[4,6]を出したい([1+3,2+4])
http://qiita.com/Kta-M/items/b54f12d3eb49520925e7
a1= [1,2,3] a2=[3,4,3] a3=[5,6,3] [a1, a2, a3].transpose.map{|a| a.inject(:+) }
[1,2]と[3,4]を足して[4,6]を出したい([1+3,2+4])
http://qiita.com/Kta-M/items/b54f12d3eb49520925e7
a1= [1,2,3] a2=[3,4,3] a3=[5,6,3] [a1, a2, a3].transpose.map{|a| a.inject(:+) }