ExpertLancing Research Services Interview Questions and Answers

I chose expertlancing because of its reputation for providing high-quality patent research services.

• Expertlancing has a team of experienced patent researchers

• Expertlancing has a proven track record of delivering accurate and timely results

• Expertlancing offers competitive pricing for their services

The laws of thermodynamics describe how energy behaves in a system.

• First law: Energy cannot be created or destroyed, only transferred or converted.

• Second law: Entropy in a closed system will always increase over time.

• Third law: As temperature approaches absolute zero, the entropy of a system approaches a minimum value.

• Examples: A car engine converting fuel into motion (1st law), a cup of hot coffee cooling down (2...read more

SQL joins are used to combine rows from two or more tables based on a related column between them.

• Types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN.

• INNER JOIN returns rows when there is at least one match in both tables.

• LEFT JOIN returns all rows from the left table and the matched rows from the right table.

• RIGHT JOIN returns all rows from the right table and the matched rows from the left ta...read more

Group anagrams in an array of strings based on their characters.

• Iterate through the array of strings and sort each string to group anagrams together.

• Use a hashmap to store the sorted string as key and the list of anagrams as value.

• Return the values of the hashmap as the grouped anagrams.

The task is to determine if a given string consisting of parentheses is balanced or not.

• Iterate through the characters of the string and use a stack to keep track of opening parentheses.

• When encountering an opening parenthesis, push it onto the stack. When encountering a closing parenthesis, check if it matches the top of the stack.

• If the stack is empty when encountering a closing parenthesis or if there are unmat...read more