PROFESSIONAL-CLOUD-DEVELOPER · Question #71
PROFESSIONAL-CLOUD-DEVELOPER Question #71: Real Exam Question with Answer & Explanation
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Question
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?
Options
- AA linked list
- BA hash table
- CA two-dimensional array
- DA comma-delimited string
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