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

initializeNDArray

Create a n-dimensional array with given value.

Use recursion. Use Array.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]]]