Live coding interview tool

How it works

A shared editor with syntax colouring. Both sides type into the same file and see each other’s cursor line. Python, JavaScript and TypeScript run in your browser, in a sandbox, and both sides see the output.

Send the candidate one link. They open it in a browser: no account, no install. You keep private notes beside the session and save it as a PDF at the end.

shared editor
line presence
runs in your browser

Interviewer

Merge sorted arrays Sam (you) AlexNotesEnd session

1function merge(a, b) {
2  const out = [];
3  let i = 0, j = 0;
4  while (i < a.length && j < b.length) {Alex
5    out.push(a[i] <= b[j] ? a[i++] : b[j++]);
6  }
7  return out.concat(a.slice(i), b.slice(j));
8}
9console.log(merge([1, 4], [2, 3, 5]));

Output finishedran in Alex’s browser, 3 ms

[ 1, 2, 3, 4, 5 ]

Notes private to you

[14:02] Started with two pointers without prompting. [14:06] Ask about the tail — do they reach for slice()?

Candidate

Live coding interview tool

How it works

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