Sharing the latest Amazon NG questions from 1point3acres for intern assessments (Amazon OA 2026) —— When practicing, start with easier difficulty problems to master common solutions for each type, such as greedy algorithms, dynamic programming, etc. After becoming familiar, gradually challenge medium and hard difficulty problems to better adapt to the OA pace. This set of questions is from the recent Amazon 2026 summer real exam — both problems fully AC'd. There are students from schools starting with "N" and those starting with "U" who received them. It really does seem there's a certain probability of OAs being sent based on school. For classmates who haven't received an OA yet, please wait patiently~
Amazon Interview Timeline
10/20: Found a friend for an internal referral and submitted the application
10/25: Received the OA and successfully completed it
11/10: Received a “keep-warm” email stating that a VO survey would be sent within two weeks. However, after that, I emailed HR several times asking why I hadn’t received the VO survey, but got no response at all. At one point, I genuinely thought I had been rejected.
12/7: Finally received the VO survey
12/17: Completed three interview rounds (one round with one LC Medium, one round with two LC Mediums, and one pure BQ Bar Raiser round — no OOD questions were asked)
Classic Amazon OA Problem Set – Shared
Question 1
Given a set of two-digit numbers (from 10 to 99), find the largest subset such that all numbers in the subset share at least one common digit (0–9).
Solution Approach
Since all numbers are two-digit numbers, the shared digit can only be one of 0–9.
- For each possible digit d, find all array elements that contain d; these elements naturally form a sharing group.
- By iterating over all digits d and taking the maximum group size, we obtain the answer.
- This approach directly leverages the limited digit range and avoids complex combinational checks.
Question 2
Control a token moving along a number line, where it can only move to the right by steps that are multiples of 3. The number line contains two types of markers, 'T' and 'C'. The token starts from the first 'T' and needs to collect as many 'C' markers as possible.
Solution Approach
The key observation is that positions can be divided into three groups based on their index modulo 3. Each token can only collect coins from positions that belong to the same modulo class as its starting position. Therefore, first find the position of the first 'T' to determine the modulo class. Then, starting from that position, count and accumulate the number of 'C' characters by moving forward in steps of 3.
Subsequent Work Simulation
After completing the coding questions, the Work Simulation is much simpler. It can be viewed as a multiple-choice version of a situational judgment test. There is no time limit, and the logic is relatively consistent. By referring to real questions, it’s generally easy to avoid mistakes.
For more real questions, please contact us to obtain them. For learning and discussion purposes only.
Reference
Amazon SDE I Intern 2025 - OA question
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