You Are Parsing a Log File That Contains Three Columns

question 43

Multiple Choice

You are parsing a log file that contains three columns: a timestamp, an account number (a string) , and a transaction amount (a number) . You want to calculate the sum of all transaction amounts for each unique account number efficiently. Which data structure should you use?

• A) A linked list
• B) A hash table
• C) A two-dimensional array
• D) A comma-delimited string

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Definitions:

Data

Facts and statistics collected together for reference or analysis, used to make decisions or solve problems.

Information

Data that has been processed, organized, or presented in a way that gives it meaning or context.

Media Richness

The capacity of a communication medium to effectively convey complex information in a timely manner.

Feedback

The process of giving information about the output of a system or someone's performance, which can be used as a basis for improvement.