展平锯齿状的多维数组 [英] Flatten a jagged multi dimensional array

问题描述

我需要帮助扁平化这样的数组:

I need help flattening an array like this:

[1,2,[2,3],[5,[6,1],4],7]

我希望它像

[1,2,2,3,5,6,1,4,7].

我搜索过类似的东西，找到了[].concat.apply，但它只会处理二维数组.

I have searched something like this, and found [].concat.apply, but it will only take care of the two dimensional arrays.

我还想使用一种适用于任何锯齿状多维数组的算法.请帮忙.谢谢

I also want to use an algorithm that will work for any jagged multi dimensional arrays. Please help. Thx

推荐答案

您可以将 concat.apply 内容包装在循环中以处理深度嵌套的数组:

You can wrap the concat.apply thing in a loop to handle deeply nested arrays:

while (a.some(Array.isArray))
    a = [].concat.apply([], a)

或在 ES6 语法中:

or in the ES6 syntax:

while (a.some(Array.isArray)) 
    a = [].concat(...a);

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