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How to create a flat version of a deeply nested array? [Programming Interview Question]
@Yomesh Gupta
Given a deeply nested array, create a function on the array, namely flatten, that when invoked returns a flat version of the original array. Function should be defined in a way that it can be invoked on existing and future arrays.
Demo:
var input = [
1, 2, 3,
[4],
[5, 6, [7], [8, [9, [10]]]],
11, 12, 13,
[14, [[[[[15, [16]]]]]]],
17, 18,
[19, [20, [21, [22, [23, [24, [[[[[25]]]]]]]]]]]
];
var flatArray = input.flatten();
// flatArray: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25]