You are parsing a log file that contains three columns: a timestamp, an account number (a string), and a transaction amo
Posted: Mon Aug 01, 2022 9:50 am
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
Which data structure should you use?
A. A linked list
B. A hash table
C. A two-dimensional array
D. A comma-delimited string