2677-chunk-array.ts

// Title: Chunk Array
// Description:
//     Given an array arr and a chunk size size, return a chunked array.
//     A chunked array contains the original elements in arr, but consists of subarrays each of length size.
//     The length of the last subarray may be less than size if arr.length is not evenly divisible by size.
//     You may assume the array is the output of JSON.parse. In other words, it is valid JSON.
//     Please solve it without using lodash's _.chunk function.
// Link: https://leetcode.com/problems/chunk-array/

function chunk(arr: any[], size: number): any[][] {
  return [...Array(Math.ceil(arr.length / size))]
    .map((_, i) => arr.slice(size * i, size * (i+1)));
}