Divide one array into two nested array [duplicate]

Question

I have an array containing 4 values. I need to make it a nested array with two arrays containing two values. Javascript is needed. This answer could help but it is in Ruby. Array reduce may help but I am not able to use it well enough.

array = [20, 45, 22, 51]
result = [[20,45],[22,51]]

(as well as many more Split array into chunks of N length, How to split a long array into smaller arrays, with JavaScript etc. etc.) — pilchard
– pilchard, Commented May 10, 2022 at 21:51

Siva Kondapi Venkata · Accepted Answer · 2022-05-10 21:55:04Z

1

Use map and slice

const array = [20, 45, 22, 51]

const mid = Math.floor(array.length / 2);

const result = [[0, mid], [mid, array.length]].map(idxs => array.slice(...idxs))

console.log(result)

answered May 10, 2022 at 21:55

Siva Kondapi Venkata

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