Patni Computer Systems Interview Questions and Answers

Searching and sorting methods are essential algorithms used to organize and retrieve data efficiently.

• Common searching methods include linear search, binary search, and hash tables.

• Common sorting methods include bubble sort, selection sort, insertion sort, merge sort, quick sort, and heap sort.

• Efficiency of searching and sorting algorithms is measured in terms of time complexity and space complexity.

• Choosing the right ...read more

Newton's laws of motion describe the relationship between an object and the forces acting on it.

• First law: An object at rest stays at rest, and an object in motion stays in motion unless acted upon by an external force.

• Second law: The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass (F=ma).

• Third law: For every action, there is an equal and opposite ...read more

Google uses an Information Retrieval (IR) system with web crawlers and page ranking algorithms.

• Google's IR system involves web crawlers that scan and index web pages.

• Page ranking algorithms determine the relevance and importance of web pages in search results.

• Google's IR system is constantly evolving to improve search accuracy and user experience.

Java is a high-level, object-oriented programming language while C is a low-level, procedural programming language.

• Java is platform-independent, while C is platform-dependent.

• Java has automatic memory management (garbage collection), while C requires manual memory management.

• Java is more secure due to its strong type system and runtime environment, while C allows for more direct memory manipulation.

• Java is used for dev...read more

Software approach refers to the method or strategy used to develop or implement software solutions.

• Software approach can include agile, waterfall, or hybrid methodologies.

• Choosing the right approach depends on project requirements and team dynamics.

• Examples: Scrum for agile approach, PRINCE2 for waterfall approach.

BE project focuses on building a software application, while TE project involves testing and evaluating the software.

• BE project involves designing, developing, and implementing a software application.

• TE project focuses on testing the software for bugs, errors, and performance issues.

• BE project may include technologies like Java, Python, HTML, CSS, etc.

• TE project may involve tools like Selenium, JUnit, TestNG, etc.

Java code to search for a number in an array and list multiple occurrences

• Iterate through the array and check if each element is equal to the target number

• Keep track of the indices where the target number is found

• Return the list of indices where the target number is found

Divide a rectangle into 4 equal and 2 unequal parts.

• Divide the rectangle into four equal parts by drawing two lines horizontally and two lines vertically.

• To create two unequal parts, draw a diagonal line from one corner to the opposite corner.

• The resulting parts will be four equal rectangles and two unequal triangles.

To start a business, research the market, create a business plan, secure funding, build a team, and focus on customer satisfaction.

• Conduct market research to identify a niche or demand

• Create a detailed business plan outlining goals, strategies, and financial projections

• Secure funding through investors, loans, or grants

• Build a strong team with diverse skills and expertise

• Focus on providing excellent customer service to