Doosan Heavy Industries & Construction Interview Questions and Answers

Wide range of aptitude questions including some technical

Q1. Pure technical interview theory + coding
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Q2. WAP to find the 2nd maximum number
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WAP to find the 2nd maximum number in an array
• Sort the array in descending order and return the 2nd element

• Iterate through the array and keep track of the maximum and 2nd maximum

• Use a priority queue to find the 2nd maximum
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Q3. Explain design patterns
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Design patterns are reusable solutions to common software design problems.
• Design patterns provide a common vocabulary for developers to communicate about solutions to common problems.

• They can improve code readability, maintainability, and scalability.

• Examples include the Singleton pattern, Factory pattern, and Observer pattern.
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Q4. Explain SOLID principles
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SOLID principles are a set of five design principles for writing maintainable and scalable code.
• S - Single Responsibility Principle: A class should have only one reason to change.

• O - Open/Closed Principle: Software entities should be open for extension but closed for modification.

• L - Liskov Substitution Principle: Subtypes should be substitutable for their base types.

• I - Interface Segregation Principle: Clients should ...read more
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Q1. Questions related to hobby
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Q2. Career expectations related to
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Q3. Family background discussion
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Q1. Very basic stuff about SAP SD
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Q1. Deep dive into overall work experience and checked feasibility whether you can work and relocate to Mumbai
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Q1. If you give them little room then they will convert that into an opportunity and bargain with you. Ask them about the variable component because they will not tell you and it will have great impact on in-h...read more
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