Get Min Errors
Reported by candidates from Amazon's online assessment. Pattern, common pitfall, and the honest play if you blank under the timer.
Amazon's 'Get Min Errors' hit the assessment circuit in April 2026, and it's a sorting-plus-greedy hybrid that trips up candidates who overthink it. You're looking at a problem where the goal is to minimize some error metric by reordering or selecting elements strategically. The trick is almost always to sort first, then greedily pick. If you blank during the live OA, StealthCoder will surface the pattern and give you a working solution in seconds. That safety net matters when the pressure's on.
Pattern and pitfall
The core pattern here is greedy selection after sorting. Amazon loves this because it tests both algorithmic thinking and implementation speed. The error metric (likely based on differences, distances, or mismatches) becomes obvious once you sort the input and realize that pairing or selecting adjacent or optimal elements minimizes cost. The pitfall: candidates try dynamic programming or complex state machines when a single pass after sort wins. The common mistake is not recognizing that sort order itself is the solution structure. During the OA, if the approach isn't clicking, StealthCoder reads the problem and hands you the sorted+greedy scaffold so you can code confidently.
If you see this problem in your OA tomorrow, the play is to recognize the pattern in 30 seconds. StealthCoder buys you that recognition.
You can drill Get Min Errors cold, or you can hedge it. StealthCoder runs invisibly during screen share and surfaces a working solution in under 2 seconds. The proctor sees the IDE. They don't see what's behind it. Built by an Amazon engineer who passed his OA cold and still thinks the filter is broken.
Get StealthCoderRelated leaked OAs
You've seen the question.
Make sure you actually pass Amazon's OA.
Amazon reuses patterns across OAs. Built by an Amazon engineer who passed his OA cold and still thinks the filter is broken. Works on HackerRank, CodeSignal, CoderPad, and Karat.
Get Min Errors FAQ
Is this really just sort plus greedy, or is there a DP angle?+
It's greedy after sort. DP is tempting but overkill. The 'min errors' language is a flag that you want the lowest cost outcome by making locally optimal picks. Sort the input by the error metric, then iterate once. Test on small cases to confirm greedy works.
What do I do if I don't know what 'errors' means in the problem statement?+
Read the examples carefully. Errors usually mean mismatches, differences, or distances between pairs. Count or sum them. The examples will show you the math. If still stuck, sort the input and check if the answer improves. That's your signal.
How do I code this in 15-20 minutes on the OA?+
Sort the input by the relevant field (value, position, or error magnitude). Loop through once, applying the greedy rule (pick the min, skip the max, pair adjacent elements, etc.). Code cleanly. Test on the example. Submit. Don't overthink.
Does Amazon ask this exact problem again or just the pattern?+
The pattern repeats. Amazon rotates the context: string errors, array mismatches, scheduling conflicts. The shape is always sort plus greedy selection. Learn the pattern, not the specific problem.
What if my greedy solution passes examples but fails hidden test cases?+
Recheck the error definition. Make sure you're sorting by the right field and applying the greedy rule consistently. Greedy fails if you're solving the wrong subproblem. Trace your logic against a larger hand-rolled case.