C++ Coding Exercise
    This problem will require you to write a C++ program that reads an input file (‘input.csv’) and writes out a new file calculated from the inputs. We will evaluate your submission based on the following criteria:

    • Correctness. The program should run properly on Linux. We have provided the skeleton for coding.
    • Design and readability
    • Tests. Two cases are provided. We welcome more cases (no larger than 2MB in total) from you.
    • Use of modern C++14/17/20 Idioms
    • Use of C++ templates where appropriate

    Part 1:
    Please aim to spend about 1-2 hours to complete this exercise.
    Input:
    The input file represents a very simplified stream of trades on an exchange.
    Each row represents a trade. The data can be thought of as a time series of values in columns:
    ,,,
    Although the provided input file is small, the solution should be able to handle a source dataset well beyond the amount of memory and hard disk space on your machine.
    Definitions:

    • TimeStamp is value indicating the microseconds since midnight.
    • Symbol is the 3 character unique identifier for a financial instrument.
    • Quantity is the amount traded
    • Price is the price of the trade for that financial instrument.

    Safe Assumptions:

    • TimeStamp is always for the same day and won’t roll over midnight.
    • TimeStamp is increasing or same as previous tick (time gap will never be < 0).
    • Price - our currency is an integer based currency. No decimal points. - Price - Price is always > 0.

    Example: here is a row for a trade of 10 shares of aaa stock at a price of 12
    1234567,aaa,10,12
    Problem:
    Find the following on a per symbol basis:

    1. Maximum time gap time gap = Amount of time that passes between consecutive trades of a symbol, if only 1 trade is in the file then the gap is 0.
    2. Total Volume traded (Sum of the quantity for all trades in a symbol).

    3. Weighted Average Price. Average price per unit traded not per trade. Result should be truncated to whole numbers.

      Example: the following trades
      20 shares of aaa @ 18
      5 shares of aaa @ 7
      Weighted Average Price = ((20 18) + (5 7)) / (20 + 5) = 15

    4. Max Trade Price.

    Your design should allow extension to additional numerical variables computed for each symbol.
    Commands:
    $ ./Exercise input.csv output.csv

    Output:
    Your solution should produce a file called ‘output.csv’. This file should be a comma separate file with this format:
    ,,,,
    The output should be sorted by symbol ascending (‘aaa’ should be first).
    Sample Input:
    52924702,aaa,13,1136
    52924702,aac,20,477
    52925641,aab,31,907
    52927350,aab,29,724
    52927783,aac,21,638
    52930489,aaa,18,1222
    52931654,aaa,9,1077
    52933453,aab,9,756
    Sample Output:
    aaa,5787,40,1161,1222 aab,6103,69,810,907
    aac,3081,41,559,638
    Please send your source code and output.csv in a zipped git repo back for evaluation when complete. Include the amount of time you spent working on the solution.