Time: 0:00
Test a custom input to verify an edge case (e.g. empty lists, negative numbers, duplicates).
This bug belongs to the logic errors pattern
The wrong operator, an inverted condition, a formula the right way round but backwards.
What went wrong: pop() takes from the end, so the last person to arrive is served first.
The fix: return queue.pop(0)
Remember: pop() takes the last item. pop(0) takes the first.
The pattern behind it: logic errors.
Paste this into any web page or blog post. Visitors fix the bug right there, in their browser.
<iframe src="https://trybughunt.com/embed/7bc0b0f4-66fb-4b58-bee9-bd803e0f9f72" title="Debugging challenge: Queue serves the last person first" width="100%" height="580" loading="lazy" style="border:1px solid #d4d4d8;border-radius:12px;max-width:760px"></iframe>
<p style="font-size:14px">Debugging challenge from <a href="https://trybughunt.com/challenges/7bc0b0f4-66fb-4b58-bee9-bd803e0f9f72">TryBugHunt</a></p>