将整数数组映射到嵌套数组访问 [英] Map array of ints to nested array access

问题描述

有没有办法使用本身存储在数组中的索引来动态访问嵌套数组?

Is there a way to dynamically access a nested array using indices which are themselves stored in an array?

主数组/矩阵嵌套可以是可变的，例如2、4、100.

The main array/matrix nesting could be variable e.g. 2, 4, 100.

示例:

my_array = [
  [[1,  2], [3,   4]],
  [[5,  6], [7,   8]],
  [[9, 10], [11, 12]]
]

my_array.access_using_array([0, 1, 1])
  => 4

推荐答案

[0, 1, 1].inject(my_array, :fetch)
# => 4

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