PwC Software Engineer Interview Questions, Process, and Tips

Q1. Remove duplicates in array
Ans. 
Remove duplicates in array
• Use a hash table to keep track of seen elements

• Sort the array and remove duplicates in a single pass
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Q2. What is public static void main in java
Ans. 
public static void main is the entry point of a Java program
• public: access modifier that allows the main method to be accessed from anywhere

• static: indicates that the main method belongs to the class and not to an instance of the class

• void: indicates that the main method does not return any value

• main: the name of the method that serves as the entry point of the program

• String[] args: an array of strings that can be pass
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Q1. Introduce yourself
Ans. 
I am a software engineer with 5 years of experience in developing web applications using Java, Spring Boot, and Angular.
• 5 years of experience in software development

• Proficient in Java, Spring Boot, and Angular

• Strong problem-solving skills

• Experience working in Agile development environment
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Q2. How to reverse a sentence using stream api
Ans. 
Use Stream API to reverse a sentence
• Split the sentence into words using split() method

• Convert the array of words into a Stream using Arrays.stream()

• Use Stream API operations like map(), collect() and joining() to reverse the sentence
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Asked performance based questions like Looping vs MNI, Start Process vs Async Subprocess

Q1. Why are you looking to leave
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Q2. What salary are you looking for
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Q1. Var vs let difference
Ans. 
Var is function scoped, let is block scoped in JavaScript.
• Var is function scoped, let is block scoped

• Var can be redeclared, let cannot

• Var is hoisted to the top of the function, let is not

• Use let for block-level variables, var for function-level variables
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Q2. What are different react hooks
Ans. 
React hooks are functions that let you use state and other React features in functional components.
• useState: allows functional components to have local state

• useEffect: allows side effects in functional components

• useContext: allows functional components to access context

• useReducer: alternative to useState for more complex state logic

• useMemo: memoizes the result of a function

• useCallback: memoizes a callback function

• useRe...read more
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