Convert two single dimension array into one multi dimensional array

Question

I have a two array

var arr1 = [0,1,2,3,4]
var arr2 = [23,32,11,35,15]

how do i get this ?

var result = [[0,23],[1,32],[2,11],[3,35],[4,15]]

are the two input arrays guaranteed to be the same length? – Steve Archer Oct 15 '18 at 19:22 — Steve Archer, Oct 15 '18 at 19:22
yes they will have same length – Saurabh Oct 15 '18 at 19:23 — Saurabh, Oct 15 '18 at 19:23

score 1 · Accepted Answer · answered Oct 15 '18 at 19:24

In simple terms, do the following:

Compare the lengths to be equal.
Combine the arrays and create a new one.

var arr1 = [0,1,2,3,4];
var arr2 = [23,32,11,35,15];
var result = [];

if (arr1.length === arr2.length)
  result = arr1.map(function (cur, idx) {
    return [cur, arr2[idx]];
  });
console.log(result);

More shorter version using ES 6 arrow function:

var arr1 = [0,1,2,3,4];
var arr2 = [23,32,11,35,15];
var result = [];

if (arr1.length === arr2.length)
  result = arr1.map((cur, idx) => [cur, arr2[idx]]);
console.log(result);

score 1 · Answer 2 · answered Oct 15 '18 at 19:24

1

Assuming that the two input arrays are the same length:

var result = arr1.map((item, idx) => [item, arr2[idx]])

answered Oct 15 '18 at 19:24

Steve Archer

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Convert two single dimension array into one multi dimensional array

2 Answers2