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Grab Greco Software Engineer Interview Questions and Answers
Grab Greco Software Engineer Interview Experiences
2 interviews found
Anonymous
(1 Question)
- Q1. Career planning and further plan
Interview Questionnaire
1 Question
- Q1. Three rounds of technical interview. Comprised of tree, stack based questions.
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Interview questions from similar companies
test goyal
Selected
I was interviewed in Jan 2025.
(20 Questions)
- Q1. Explain the difference between ArrayList and LinkedList in Java. When would you choose one over the other?
- Q2. What are the advantages and disadvantages of using Java’s synchronized keyword for thread synchronization? Can you explain how the ReentrantLock compares to synchronized?
- Q3. What is the difference between == and .equals() in Java? When should each be used, and what issues can arise from improper usage?
- Q4. How does the Java garbage collector work? Can you describe the different types of garbage collection algorithms available in Java?
- Q5. What are the main features of Java 8? Can you explain how lambdas and the Stream API have changed the way Java applications are written?
- Q6. Describe the differences between checked and unchecked exceptions in Java. Provide examples and explain how to handle them properly.
- Q7. What is the Java Memory Model, and how does it affect multithreading and synchronization? How does volatile help ensure memory visibility?
- Q8. Can you explain the difference between method overloading and method overriding in Java? Provide examples where each should be used.
- Q9. What are functional interfaces in Java? How do they work with lambda expressions? Provide an example of a custom functional interface.
- Q10. What is a Java Stream, and how does it differ from an Iterator? Explain how Streams can be used to process collections efficiently.
- Q11. Explain the concept of immutability in Java. How does the String class achieve immutability, and what are the advantages of immutable objects?
- Q12. What is the difference between final, finally, and finalize in Java? Provide examples to illustrate their usage.
- Q13. Explain the Singleton design pattern in Java. How can you implement it safely to ensure thread safety?
- Q14. What are Java annotations, and how are they used in frameworks like Spring? Explain the difference between built-in and custom annotations.
- Q15. How do Java Streams handle parallel processing? What are the potential pitfalls of using parallel streams, and how can they be mitigated?
- Q16. Explain the difference between ArrayList and LinkedList in Java. ArrayList is implemented as a dynamic array, while LinkedList is a doubly linked list. ArrayList provides fast random access (O(1) complexi...
- Q17. What are the advantages and disadvantages of using Java’s synchronized keyword for thread synchronization? The synchronized keyword ensures that only one thread can access a block of code at a time. It pr...
- Q18. What is the difference between == and .equals() in Java? == checks for reference equality, meaning it compares memory addresses. equals() checks for value equality, which can be overridden in user-defined...
- Q19. How does the Java garbage collector work? Garbage collection in Java automatically reclaims memory occupied by unused objects. The JVM has different types of GC algorithms, including Serial, Parallel, CMS...
- Q20. What are the main features of Java 8? Java 8 introduced lambda expressions, enabling functional-style programming. The Stream API allows efficient data processing with map, filter, and reduce operations. ...
(4 Questions)
- Q1. Data structure and algorithm
- Q2. Some tricky logical question
- Q3. Stack and queue
- Q4. Some basic question about system Design
2021 01220
I applied via Campus Placement
3 questions of dsa
1 of api
(1 Question)
- Q1. Graph based question to find the shortest path between 2 prime numbers by changing 1 digit at once and obtained number should be prime too.
Interview Preparation Tips
For 2nd round there was low level design
But I couldn't get to the 2nd round
Vaishnavi Mishra
I applied via Referral and was interviewed in Jun 2024. There were 3 interview rounds.
Hackerrank Coding Test, Leetcode medium questions
HLD test, was asked to design an online coding platform like leetcode
(2 Questions)
- Q1. Most interesting project you have worked on
- Q2. How do you handle conflict at workplace
Interview Preparation Tips
- Prepare HLD well
(2 Questions)
- Q1. Find the leaves of the tree.
- Ans.
Leaves of a tree are the nodes with no children in a tree data structure.
Traverse the tree and identify nodes with no children.
Use depth-first search or breadth-first search algorithms to find leaves.
Examples: In a binary tree, leaves are nodes with no left or right child.
In a general tree, leaves are nodes with no children in their child list.
- Q2. Find the LCA of tree.
- Ans.
The Lowest Common Ancestor (LCA) of a tree is the shared ancestor of two nodes farthest from the root.
Start from the root and traverse the tree to find the paths from the root to the two nodes.
Compare the paths to find the last common node between them, which is the LCA.
If one of the nodes is an ancestor of the other, then the ancestor node is the LCA.
(2 Questions)
- Q1. What projects you worked upon?
- Ans.
I have worked on projects involving web development, mobile app development, and data analysis.
Developed a web application using React and Node.js for a client in the e-commerce industry
Created a mobile app using Flutter for a startup in the healthcare sector
Performed data analysis on customer behavior using Python and SQL for a marketing company
- Q2. What internships you did?
- Ans.
I completed internships at ABC Company and XYZ Company during my undergraduate studies.
Interned at ABC Company working on web development projects
Interned at XYZ Company assisting with software testing and quality assurance
Gained hands-on experience in coding, debugging, and problem-solving
Interview Preparation Tips
Skills evaluated in this interview
(1 Question)
- Q1. Tell me about yourself
Selected
I applied via Recruitment Consulltant and was interviewed in Mar 2024. There were 2 interview rounds.
Coding mainly on LinkedList and Strings
(1 Question)
- Q1. Have asked about my previous work experience and STAR pattren questions
Selected
I applied via LinkedIn and was interviewed in May 2024. There was 1 interview round.
Got a leetcode easy question
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Rating in categories
|
Software Engineer
59
salaries
|  ₹13.4 L/yr - ₹36 L/yr |
|
Senior Software Engineer
51
salaries
| ₹27 L/yr - ₹60.3 L/yr |
|
Team Lead
32
salaries
| ₹1.9 L/yr - ₹3 L/yr |
|
QA Engineer
16
salaries
| ₹15.9 L/yr - ₹36.3 L/yr |
|
Software Developer
12
salaries
| ₹12.7 L/yr - ₹37 L/yr |
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