Supahands Coding Assessment

• This is a coding asssessment for prospective supahands engineers
• Bear in mind that you want to be VERY VERY IMPRESSIVE, PLEASE FEEL FREE TO SHOW OFF!!!! Think of this coding assessment as an audition

Problem Statement

• Given a list of time stamps that is generated by the provided seed.py, where the timestamps represent login time
• Length is defined as the number of days of consecutive logins, NOT the number of consecutive logins
• Output a table with time stamps sorted by consecutive logins, sorted by descending length
• For example, if given the following timestamps
  • ['2021-03-13 15:13:05', '2021-03-13 23:13:05', '2021-03-16 15:13:05', '2021-03-16 23:13:05', '2021-03-17 07:13:05', '2021-03-17 15:13:05', '2021-03-17 23:13:05', '2021-03-18 07:13:05', '2021-03-18 15:13:05']
• DO NOT use the example above as input
• Since the longest period of consecutive logins occur from 2021-03-16 to 2021-03-18, the answer would be

START	END	LENGTH
2021-03-16	2021-03-18	3
2021-03-13	2021-03-13	1

• The problem stems from needing to award badges for consecutive logins

Submission Instructions

• Fork the project here
• You can solve the problem using either python, javascript, or ruby
• Feel free to use 3rd party libraries
• The submitted solution should ingest the STDOUT emitted by the seed.py file without copying the source code into the solution file and running it from inside the solution file. Importing the seed.py and running it from within the solution to subsequently pipe the STDOUT to a variable is allowed.
• Feel free to create js or rb versions of the seed file without modifying the code logic of the original seed.py
• Include unit tests either as separate files or use the replit test functionality
• Include a separate readme in the form of a instructions.txt if additional instructions are required to get your solution running, such as installing libraries
• Notify careers@supahands.com upon completion and include the join link for your replit.com project
• Solutions that do not follow the submission instructions WILL NOT be considered

Hints

• We WILL NOT be processing submissions that do not match the output format as stipulated in Outputs
• You are ENCOURAGED to re-attempt the assessment in the event that you do not do well enough in the first attempt

Assessment Criteria

• Submitted code will be assessed based on the following criteria
  • Does it work? The solution should work in replit or codecollab
  • Do we have tests, and do they work?
  • Is the code clearly documented?
  • Did the candidate read the README and comprehended the instructions in the README?
  • Defensibility - Does the code handle dirty data, incorrect input data, attacks?
  • Maintainability - Is the code written with small discrete functions, using either a functional or object oriented approach
  • Best practices - Good test coverage, good tests, testing both positive and negative outcomes, good naming of methods and functions in the code. Solution follows best practices such as DRY, KISS, YAGNI, SOLID etc.
  • Run time or space efficiency vs Input Growth - Write the most optimal code possible
• Candidate should write high quality production ready code

Expected Outputs

• During the assessment we expect an output of the following format

START	END	LENGTH
2021-03-03	2021-03-10	8
2021-02-15	2021-03-18	4
2021-02-10	2021-03-12	3
2021-01-03	2021-01-03	1