Mu Sigma Software Developer Interview Questions and Answers

Q1. Valid parentheses
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Q2. Currying with arrow function
Ans. 
Currying is a technique in functional programming where a function with multiple arguments is transformed into a sequence of nested functions, each taking a single argument.
• Currying can be achieved using arrow functions in JavaScript.

• Arrow functions automatically bind 'this' and do not have their own 'this' value.

• Example: const add = a => b => a + b;

• Example: const addFive = add(5); const result = addFive(3); // result
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Q1. DFS related problem
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Q2. Machine coding round
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Q1. Tell me about a project you have worked on
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Q1. Data structures
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Q2. Solid Principles
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Q3. Single responsibility principle
Ans. 
Single responsibility principle states that a class should have only one reason to change.
• Each class should have only one responsibility

• Helps in making code more maintainable and easier to understand

• Promotes separation of concerns

• Example: A class that handles user authentication should not also handle file management
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Q4. Javascript question
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Q5. Object oriented concepts
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Q1. Concepts of OOPS
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It was an easy test. It consisted of MCQs and two coding qns. Prepare SQL well. It also had 2 programming question. Both were medium difficukty

Q1. It was mainly focussed on my projects. Be thorough with you resume. But it also depends on the interviewer.
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Apt + coding questions, medium difficulty

Q1. Basics qs on oops and known programming language
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Q1. In-depth of oops and live coding questions
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Q1. Basics qs like y and what
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Q1. Shallow copy and deep copy
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Q2. What is Pure component
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A Pure component is a component in React that does not have any state or lifecycle methods, resulting in improved performance.
• Pure components are used to prevent unnecessary re-renders in React applications.

• Pure components implement shouldComponentUpdate method with shallow comparison of props and state.

• Examples of Pure components include functional components and class components that extend PureComponent class.
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