30-seconds-of-code/snippets/initializeNDArray.md

title, tags

title	tags
initializeNDArray	array,recursion,intermediate

Create a n-dimensional array with given value.

• Use recursion.
• Use 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]]]