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JavaScript: Create a n-dimensional array with given value

JavaScript fundamental (ES6 Syntax): Exercise-212 with Solution

Write a JavaScript program to 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().

Sample Solution:

JavaScript Code:

//#Source https://bit.ly/2neWfJ2 
const initializeNDArray = (val, ...args) =>
  args.length === 0
    ? val
    : Array.from({ length: args[0] }).map(() => initializeNDArray(val, ...args.slice(1)));

console.log(initializeNDArray(1, 3));
console.log(initializeNDArray(5, 2, 2, 2));

Sample Output:

[1,1,1]
[[[5,5],[5,5]],[[5,5],[5,5]]]

Pictorial Presentation:

JavaScript Fundamental: Create a n-dimensional array with given value.
JavaScript Fundamental: Create a n-dimensional array with given value.

Flowchart:

flowchart: Create a n-dimensional array with given value.

Live Demo:

See the Pen javascript-basic-exercise-212-1 by w3resource (@w3resource) on CodePen.


Improve this sample solution and post your code through Disqus

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Next: Write a JavaScript program to initialize and fill an array with the specified values.

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JavaScript: Tips of the Day

How to check whether a string contains a substring in JavaScript?

ECMAScript 6 introduced String.prototype.includes:

const string = "foo";
const substring = "oo";

console.log(string.includes(substring));

includes doesn't have Internet Explorer support, though. In ECMAScript 5 or older environments, use String.prototype.indexOf, which returns -1 when a substring cannot be found:

var string = "foo";
var substring = "oo";

console.log(string.indexOf(substring) !== -1);

Ref: https://bit.ly/3fFFgZv