Sort number array and return index js

Question

I have an array. It looks like below:

var num = [2,1,2,6,2,4];

I would like to sort but return index to an array:

var result = [1, 0, 2, 4, 5, 3];

If there is a same number, the smaller index of should be placed first.

Nina Scholz · Accepted Answer · 2020-04-20 08:42:30Z

2

You could get all indices and sort with the values of num.

var num = [2, 1, 2, 6, 2, 4],
    indices = [...num.keys()].sort((a, b) => num[a] - num[b]);

console.log(indices); // [1, 0, 2, 4, 5, 3]

answered Apr 20, 2020 at 8:42

Nina Scholz

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