30-seconds-of-code/snippets/js/s/initialize-n-dimensional-array.md

title, type, language, tags, cover, dateModified

title	type	language	tags	cover	dateModified
Initialize n-dimensional array	snippet	javascript	array recursion	colorful-pots	2020-10-22T20:23:47+03:00

Create a n-dimensional array with given value.

• Use recursion.
• Use Array.from(), Array.prototype.map() to generate rows where each is a new array initialized using initializeNDArray().

const initializeNDArray = (val, ...args) =>
  args.length === 0
    ? val
    : Array.from({ length: args[0] }).map(() =>
        initializeNDArray(val, ...args.slice(1))
      );

initializeNDArray(1, 3); // [1, 1, 1]
initializeNDArray(5, 2, 2, 2); // [[[5, 5], [5, 5]], [[5, 5], [5, 5]]]