Reading 1B row file using Java NIO lib.

[manishgarg90]

I used the Java NIO library only to read the file and process using Map and TreeMap.

Time Taken to read and process 1 billion rows: 52974ms

System Specification: OS: RHEL 8.9

CPU: Core: 8 Architecture: x86_64 Model: Intel(R) Core(TM) i5-10310U CPU @ 1.70GHz

RAM: 16GB

Check List:

• [x] Tests pass (./test.sh <username> shows no differences between expected and actual outputs)

• [x] All formatting changes by the build are committed

• [x] Your launch script is named calculate_average_<username>.sh (make sure to match casing of your GH user name) and is executable

• [x] Output matches that of calculate_average_baseline.sh

• [x] For new entries, or after substantial changes: When implementing custom hash structures, please point to where you deal with hash collisions (line number)

• Execution time:

• Execution time of reference implementation:

[manishgarg90]

All checked list is passed

[gunnarmorling]

As per the README and the PR template, new entries should run in ~10 sec or less, this one is at 00:36.424. Still merging it as you put in the effort already, but any potential follow-up PRs should be somewhere up there.