Google Software Developer Interview Questions, Process, and Tips

An aptitude test is an exam used to determine an individual's skill or propensity to succeed in a given activity.

Q1. Why is Java a platform independent language?
Ans. 
Java is platform independent due to its bytecode and JVM implementation.
• Java code is compiled into bytecode, which can run on any platform with a Java Virtual Machine (JVM)

• JVM acts as an interpreter, translating bytecode into machine code specific to the underlying platform

• This allows Java programs to be written once and run anywhere, without the need for recompilation
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Q2. What are Static Binding and Dynamic Binding?
Ans. 
Static binding is resolved at compile time, while dynamic binding is resolved at runtime.
• Static binding is also known as early binding, where the method call is resolved at compile time based on the type of the object.

• Dynamic binding is also known as late binding, where the method call is resolved at runtime based on the actual type of the object.

• Example of static binding: method overloading.

• Example of dynamic binding:
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Q3. Explain Virtual Machine (JVM) architecture.
Ans. 
JVM is a virtual machine that enables a computer to run Java programs.
• JVM is platform-independent and converts Java bytecode into machine code.

• It consists of class loader, runtime data areas, execution engine, and native method interface.

• JVM manages memory, garbage collection, and exception handling.

• Examples of JVM implementations include Oracle HotSpot, OpenJ9, and GraalVM.
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Q4. What is the lambda expression in JAVA?
Ans. 
Lambda expression in JAVA is a concise way to represent a method implementation using a functional interface.
• Lambda expressions are used to provide a more concise way to implement functional interfaces in JAVA.

• They are similar to anonymous classes but with less boilerplate code.

• Lambda expressions can be used to pass behavior as an argument to a method.

• Syntax: (parameters) -> expression or (parameters) -> { statements;
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Q1. Tell me something about yourself?
Ans. Thank you for allowing me to introduce myself. My name is Sivaranjani and I am from Salem City in Tamilnadu. I completed my bachelor degree with the CSE branch from Muthayammal Engineering College. First of all, I want to introduce myself with my soft skills. I am optimistic, smart, self-confident, hardworking, and have a positive mindset. My technical skills include proficiency in Java programming language, C program...read more
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It was an amazing interview.

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Q1. Introduce yourself
Ans. 
I am a software developer with 5 years of experience in Java, Python, and SQL.
• 5 years of experience in Java, Python, and SQL

• Worked on developing web applications using Java Spring framework

• Proficient in database management with SQL
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Q2. Array question of leetcode
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Q3. Python basic and medium
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Q4. C++ standard template library
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Q5. Dynamic programming questions
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Q1. What is tree in data structure
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Q2. What is hashing in data structure
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Q1. Binary search on array
Ans. 
Binary search is a fast search algorithm that finds the position of a target value within a sorted array.
• Ensure the array is sorted before performing binary search.

• Compare the target value with the middle element of the array.

• If the target value is less than the middle element, search the left half of the array. If it is greater, search the right half.

• Repeat the process until the target value is found or the subarray i
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Q2. Multi source bfs on the array
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Multi-source BFS on an array of strings involves finding the shortest path from multiple starting points to a target point.
• Implement BFS algorithm to traverse the array of strings starting from multiple sources simultaneously.

• Maintain a queue of nodes to visit next, and keep track of visited nodes to avoid revisiting.

• Update the distance of each node from the sources as you traverse the array.

• Example: Given an array of ...read more
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