将行数组转换为列数组 [英] Convert array of rows to array of columns

问题描述

将任何（等长）行数组转换为列数组的最优雅方法是什么？

What would be the most elegant way to turn any array of (equal length) rows into an array of columns?

例如：

[1,2,3]
[4,5,6]

# To    

[1,4]
[2,5]
[3,6]

这是我到目前为止：

grid = [
  [1,2,3]
  [4,5,6]
]

grid2 = []

for i in grid[0]
  grid2.push []

for row, y in grid
  for el, x in row
    grid2[x].push el

是否有可能会有1位班轮？

Is there maybe even a 1-liner that would do it?

推荐答案

CoffeeScript：

((row[i] for row in grid) for i in [0...grid[0].length])

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