Question

54

Reorder an array according to given index in javaScript

rated 0 times [ 60] [ 6] / answers: 1 / hits: 16726 / 6 Years ago, wed, august 29, 2018, 12:00:00

I am facing problem to change the index values of an array according to given index in javaScript. i have searched on StackOverflow and found some solution but those not working for me of are not for javaScript. The below input array and index is mentioned.

   Input:  arr[]   = [101, 102, 103];

   index[] = [1, 0, 2];

   Output: arr[]   = [102, 101, 103]

   index[] = [0,  1,  2]

The founded answers are
reorder array according to given index

php - sort an array according to second given array

Rearrange an array according to key

Sorting an Array according to the order of another Array

Any kind of hint/solution is highly appreciated.

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hasanb

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answered 6 Years ago elmer · Accepted Answer

What exactly does not work for you?

const arr = [101, 102, 103];

const index = [1, 0, 2];



const output = index.map(i => arr[i]);

console.log(output);