Amazon interview experience Real time questions & tips from candidates to crack your interview
SDE - Intern
Amazon
1 rounds | 1 Coding
problems
Rejected
Interview preparation journey
Preparation
Duration: 6-7 months
Topics: DSA, HTML5, CSS3, javascript, C, C++, OOPS, DBMS
Tip 1 : Consistency with DSA
Tip 2 : Regular problem solving
Tip 3 : Daily challenges
Application process
Where: Linkedin
Eligibility: 7 above CGPA
Tip 1 : Well mannered that every detail is specified in a very preferable manner.
Tip 2 : All on one page, such that they follow the format of the resume.
Interview rounds
01
Round
Easy
Online Coding Interview
Duration50 Minutes
Interview date4 Dec 2021
Coding problem1
Rounds are technically based on DSA and the projects that I mentioned, and it will be last at least 50 minutes.
1. Valid Sudoku
Moderate
40m average time
60% success
0/80
Asked in companies
You have been given a 9 X 9 2D matrix 'MATRIX' with some cells filled with digits(1 - 9), and some empty cells (denoted by 0).
You need to find whether there exists a way to fill all the empty cells with some digit(1 - 9) such that the final matrix is a valid Sudoku solution.
A Sudoku solution must satisfy all the following conditions-
1. Each of the digits 1 - 9 must occur exactly once in each row.
2. Each of the digits 1 - 9 must occur exactly once in each column.
3. Each of the digits 1 - 9 must occur exactly once in each of the 9, 3 x 3 sub-matrices of the matrix.
Note
1. There will always be a cell in the matrix which is empty.
2. The given initial matrix will always be consistent according to the rules mentioned in the problem statement.
Problem approach
use a hashmap to solve the problem.
Here's your problem of the day 
Solving this problem will increase your chance to get selected in this company
Skill covered: Programming
How do you remove whitespace from the start of a string?
Choose another skill to practice
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