Remove Duplicates from Sorted Array: which companies ask it and how to practise

Remove Duplicates from Sorted Array is a Easy problem that 23 companies are reported to ask. This page shows who, how often and how recently, what the question tests, and how to practise it out loud with an interviewer who asks follow-ups. We link to the original problem statement instead of copying it.

Which companies ask Remove Duplicates from Sorted Array?

Public company lists attribute Remove Duplicates from Sorted Array, a Easy problem, to 23 companies. The most frequent askers are Wissen Technology, Bloomberg and Microsoft. 8 reports are from the last six months. It mainly tests array and two pointers. Use this as a practice guide, not a promise.

Practise this kind of question aloud

Who asks Remove Duplicates from Sorted Array

23 companies appear in the public lists for this question. By how often each is reported: Wissen Technology (very often), Bloomberg (often), Microsoft (often), Capgemini (often), Meta (often), Google (often), Siemens (often), Amazon (often), Morgan Stanley (often) and Myntra (often), and 13 more. 8 of them were reported in the last six months, Bloomberg, Microsoft and Meta among them.

These are candidate reports collected in public lists, not statements from the companies. They are a good guide to what to practise and a poor guide to what you will be asked: interviewers change questions, and the same company asks different questions by team and level. Last reviewed 25 October 2026.

What Remove Duplicates from Sorted Array tests

It is rated Easy, so interviewers expect a correct, complete solution and a clear statement of the time and space cost, often in the first 15 to 20 minutes, with time left for a variation.

Arrays are the default container, so the interviewer is watching how you index, how you avoid a second full pass, and whether you notice when sorting or a hash map would remove a nested loop.

Two pointers walk a sorted or symmetric structure from both ends, or one fast and one slow. The proof that you never skip the answer is what the interviewer is waiting for.

How to practise it

Do not just solve it silently. In a real interview you explain the approach before you code, write while you talk, and defend the solution to follow-ups. Set a timer, say the brute force and its cost first, then improve it, and finish by stating the time and space complexity and two edge cases you tested.

On giveinterview you can take this kind of question as a spoken interview: the AI interviewer opens with the problem, watches you code, asks cross-questions and ends with a scorecard. Your first 3 single-question interviews are free for life, every interview report is free, and a new account also gets 6 welcome credits.

Read the original statement here: https://leetcode.com/problems/remove-duplicates-from-sorted-array/ (opens the publisher's page). The statement is theirs; we do not reproduce it.

Questions to practise next

If you can solve Remove Duplicates from Sorted Array, try these next, chosen because they share its main topic and many of the same companies: Two Sum (Easy), Merge Intervals (Medium), Best Time to Buy and Sell Stock (Easy), Number of Islands (Medium), Group Anagrams (Medium) and Trapping Rain Water (Hard). Each has its own page in the questions list.

Frequently asked questions

Is Remove Duplicates from Sorted Array asked at Amazon?

Amazon appears in the public lists for Remove Duplicates from Sorted Array, reported often. Treat that as a reason to practise it, not a promise you will be asked it.

How hard is Remove Duplicates from Sorted Array?