Amazon Software Developer Interview Questions, Process, and Tips

Q1. Find sum of numbers
Ans. 
To find the sum of numbers, iterate through the array and add each number to a running total.
• Iterate through the array of numbers

• Add each number to a running total

• Return the total sum
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Q1. What is bfs and dfs ?
Ans. 
BFS (Breadth First Search) and DFS (Depth First Search) are algorithms used for traversing or searching tree or graph data structures.
• BFS explores all the neighbor nodes at the present depth prior to moving on to the nodes at the next depth level.

• DFS explores as far as possible along each branch before backtracking.

• BFS uses a queue data structure while DFS uses a stack or recursion.

• Example: BFS can be used to find the ...read more
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Q2. What type of problem needs dp to solve ?
Ans. 
Dynamic programming is used to solve problems that can be broken down into overlapping subproblems and have optimal substructure.
• DP is used for problems with optimal substructure, where the solution can be constructed from optimal solutions of its subproblems.

• DP is used for problems with overlapping subproblems, where the same subproblems are solved multiple times.

• Examples include Fibonacci sequence, shortest path prob
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Q1. Softscd cdshsk cdhjkcds jk
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Q2. Xck cchjsdk cdsjkscdk jcsdhjk
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Online assessment, pretty hard

Easy graph question with 2 engineers

Easy LLD question with a nice interviewer

All round will have 2 or more LP question

2 medium DS algo questions was there

Q1. Technical rounds 1
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Q2. Cs fundamental and behavioral questions
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Q3. What is Dbms required??
Ans. 
A Database Management System (DBMS) is required to manage and organize data efficiently in a structured manner.
• DBMS is required to create, update, retrieve, and manage data in databases.

• It provides a way to define, create, and manipulate databases.

• DBMS ensures data integrity, security, and consistency.

• Examples of popular DBMS include MySQL, Oracle, SQL Server, and PostgreSQL.
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Q4. Why Os is required??
Ans. 
Operating system (OS) is required to manage hardware resources, provide user interface, and run applications efficiently.
• Manages hardware resources such as CPU, memory, and storage

• Provides user interface for users to interact with the computer

• Runs applications and manages processes efficiently

• Ensures security and protection of data

• Facilitates communication between hardware and software components
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Q5. What do you mean by belady's anomaly??
Ans. 
Belady's anomaly is a phenomenon in which increasing the number of frames in a page table may increase the number of page faults.
• Belady's anomaly occurs when increasing the number of frames in a page table leads to more page faults.

• It contradicts the common belief that more frames always lead to better performance.

• This anomaly is more likely to occur in algorithms like FIFO (First In, First Out).
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