Amazon Interview Experience | SDE Intern | Set 9

Company Name: Amazon

Job Role: SDE Intern (6 Months)

Years of Experience Required: 0

Drive: Off-campus

CTC: 80,000/month

Preparation for Amazon

Topics: Data Structures and Algorithms

Duration: 1.5 years

Source of Preparation: Codechef, Codeforces, Leetcode, GFG, Striver’s SDE sheet.


Amazon Interview Rounds

Round 1: Online Coding Test

Problem List:

** I don’t remember the questions exactly**

Round 2: Technical Interview 1 on Amazon Chime (1 Hour)

Topics asked: String, DP.


The interviewer introduced himself and then asked for my introduction. Then he explained to me the flow of things.

Problem 1: Given a string, I need to find the length of the longest substring with no repeating characters.

Problem 2: Count possible decodings of a given digit sequence.

I was able to solve both questions in just under 1 hour with a little help from the interviewer in optimizing the 2nd question.

Round 3: Technical Interview 2 on Amazon Chime (35 minutes)


Topics asked: Probability.

No introductions were neither asked nor given. The interviewer went straight to the question. 

Problem 1: Select a random number from the stream, with O(1) space.

The question was quite confusing and was very hard to understand. But after some clues and hints, I was able to solve the question in about 35 minutes. I was expecting another question but he didn’t want to ask any further questions.

Verdict: Selected
Message to Aspiring Students:
Just don’t lose hope and keep trying the questions in the interview even if you don’t see yourself solving them at the end. Interviewers are generally very helpful and with their help, every question seems easy and is solvable.