[[deno_std.collections]]の`chunk`を使う。 ```ts import { chunk } from "https://deno.land/[email protected]/collections/chunk.ts" chunk([1, 2, 3, 4, 5, 6, 7], 3) // [ [ 1, 2, 3 ], [ 4, 5, 6 ], [ 7 ] ] ```