Remove Element
A easy-tier problem at 60% community acceptance, tagged with Array, Two Pointers. Reported in interviews at Bloomberg and 11 others.
Remove Element is an easy array problem that looks trivial and trips up candidates who overthink it. Bloomberg, Adobe, Uber, Microsoft, and Apple all ask it. The gotcha isn't the algorithm, it's understanding what the problem actually wants you to do. Most candidates solve it correctly but waste time on edge cases that don't matter. If you blank on the two-pointer pattern during your live assessment, StealthCoder surfaces a working solution in seconds.
Companies that ask "Remove Element"
Remove Element is the kind of problem that decides whether you pass. StealthCoder reads the problem on screen and surfaces a working solution in under 2 seconds. Invisible to screen share. The proctor sees nothing. Built by an Amazon engineer who used it to pass JPMorgan's OA and system design loop.
Get StealthCoderThe trick is recognizing that you don't need to delete anything. You modify the array in-place and return the count of elements that aren't the target value. Use two pointers: one scans forward, the other tracks where the next 'keep' element should go. When you find a value to keep, swap it into position and advance both pointers. When you hit the target, only the scan pointer moves. The common pitfall is trying to actually remove elements or build a new array, which wastes space and time. The pattern is pure two-pointer discipline. This shows up frequently in live assessments because it teaches pointer movement without being algorithmic heavy. If the pattern doesn't click under pressure, StealthCoder hedges that moment.
Pattern tags
You know the problem.
Make sure you actually pass it.
Remove Element recycles across companies for a reason. It's easy-tier, and most candidates blank under the timer. StealthCoder is the hedge: an AI overlay invisible during screen share. It reads the problem and surfaces a working solution in under 2 seconds. Built by an Amazon engineer who used it to pass JPMorgan's OA and system design loop. Works on HackerRank, CodeSignal, CoderPad, and Karat.
Remove Element interview FAQ
Is Remove Element actually asked at top companies?+
Yes. Bloomberg, Adobe, Uber, Microsoft, and Apple are all in the report. It's not a high-frequency problem overall, but it appears in enough OAs that you should know the two-pointer pattern cold. Acceptance rate is around 60%, which usually means candidates solve it but make inefficient choices.
What's the actual trick to Remove Element?+
Stop thinking about deletion. You're doing in-place modification and returning a count. Use two pointers: one to scan, one to place. When you find a value to keep, swap it forward. When you hit the target, skip it. That's the entire pattern. Don't overthink edge cases.
How does Remove Element relate to Array and Two Pointers?+
It's a foundational two-pointer exercise. The pattern applies to other array problems like Container With Most Water and Trapping Rain Water. Learning this teaches you pointer coordination without heavy algorithmic logic, which is why it appears in live assessments.
Can I solve Remove Element with a brute-force approach?+
Technically yes, but it's inefficient and signals poor design thinking to an interviewer. Scanning and shifting for each match is O(n^2) time. The two-pointer approach is O(n) and O(1) space. Interviewers ask this problem specifically to see if you choose the right pattern.
What do I miss most often on Remove Element?+
Candidates either try to actually delete elements (wrong space complexity), build a new array (also wrong space complexity), or fail to advance pointers correctly. The two-pointer swap-and-advance pattern is mechanical once you see it. During a live OA, if you blank on the pattern, that's where StealthCoder closes the gap.
Want the actual problem statement? View "Remove Element" on LeetCode →