Celigo Interview Questions and Answers

Inheritance is a concept in object-oriented programming where a class inherits properties and behaviors from another class.

• Inheritance allows for code reuse and promotes modularity.

• The class that is being inherited from is called the superclass or base class.

• The class that inherits from the superclass is called the subclass or derived class.

• The subclass can access the public and protected members of the superclass.

• Inhe...read more

Regular expressions in PHP are powerful tools for pattern matching and manipulating strings.

• Regular expressions are defined using the preg_match() function in PHP.

• They are used to search, replace, and validate strings based on specific patterns.

• Regex patterns consist of a combination of characters and special symbols.

• Modifiers can be added to the pattern to control the matching behavior.

• Common regex functions in PHP in...read more

Polymorphism is the ability of an object to take on many forms. It allows objects of different classes to be treated as the same type.

• Polymorphism allows a single interface to be used for different types of objects.

• It enables code reusability and flexibility in object-oriented programming.

• For example, a parent class 'Animal' can have multiple child classes like 'Dog', 'Cat', and 'Bird'. They can all be treated as 'Anim...read more

Sort the individual digits of a 10 digit number.

• Convert the number to a string to access individual digits

• Use a sorting algorithm to sort the digits

• Convert the sorted digits back to a number

The code for finding the Lowest Common Ancestor (LCA) in a Binary Search Tree (BST).

• Start from the root node and compare it with the given two nodes.

• If both nodes are smaller than the current node, move to the left subtree.

• If both nodes are greater than the current node, move to the right subtree.

• If one node is smaller and the other is greater, then the current node is the LCA.

• Continue this process until the LCA is fou

A DBMS for managing college faculty, professors, courses, and students.

• The DBMS should have tables for faculty, professors, courses, and students.

• Each table should have appropriate attributes to store relevant information.

• Relationships can be established between tables using foreign keys.

• Queries can be used to retrieve information about faculty, professors, courses, and students.

• The DBMS can be used to track enrollment

I was actively involved in coding competitions, hackathons, and programming clubs during college.

• Participated in coding competitions such as ACM ICPC and Codeforces

• Attended hackathons to work on real-world projects and improve problem-solving skills

• Joined programming clubs to collaborate with peers and learn new technologies

Yes, I believe in seeking help when stuck in a problem as it leads to faster resolution and learning.

• I believe in collaborating with team members to brainstorm solutions

• I am not afraid to ask for help from more experienced developers

• I utilize online resources like Stack Overflow or documentation when needed

Teamwork is collaborating with others towards a common goal, utilizing each member's strengths and skills.

• Collaborating with others towards a common goal

• Utilizing each member's strengths and skills

• Communicating effectively and openly

• Respecting and valuing diverse perspectives

• Sharing responsibilities and supporting each other

• Celebrating successes as a team

When faced with an unsolvable problem, I break it down, research, seek help, experiment, and iterate until a solution is found.

• Break down the problem into smaller, manageable parts

• Research and gather information related to the problem

• Seek help from colleagues, online communities, or experts

• Experiment with different approaches or solutions

• Iterate and refine the solution based on feedback and results

In 5 years, I see myself as a senior software developer leading a team of developers on innovative projects.

• Leading a team of developers on innovative projects

• Senior software developer role

• Continuing to learn and grow in the field