Javascript array sort with Reducer

This has been the most tricky/confusing javascript interview question for starters specially 😀

And this was my answer once which made interviewer shy: how the hell candidate will know if interviewer has speech recognition issue..

Btw, instead forloop, you can use "reducer" like this ⤵️

//

let reducer = (acm, value) => {
  const nextIndex = acm.findIndex(i => value < i );
  const index = nextIndex > -1 ? nextIndex : acm.length;
  acm.splice(index, 0, value);
  return acm;
}
// execution
Ley arr = [
arr.reduce(reducer, []) will produce [1,2,3,4]

Let me know how you answered this kind of interviews

Thanks!

Comments

[Tiago Dias]

What??

[6,3,-1,2].sort() // [ -1, 2, 3, 6 ]

Which is completely fine. I think you missed the point here...

Array.prototype.sort accepts a callback as a custom sorter.

What a convoluted piece of "code". Awful use case to make your point across.

[Alfredo Salzillo]

Please ad the javascript tag to the code block.

[D\sTro]

thanks

[Oscar Rodriguez Gimeno]

They asked me how to center a div. I told them 'margin 0 auto' although I don't know if it works in iexplorer

[D\sTro]

😀👌