https://github.com/sumpygump/distance-between-dates
Solution to PHP challenge 018
https://github.com/sumpygump/distance-between-dates
Last synced: 3 months ago
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Solution to PHP challenge 018
- Host: GitHub
- URL: https://github.com/sumpygump/distance-between-dates
- Owner: sumpygump
- Created: 2015-08-31T22:31:38.000Z (over 9 years ago)
- Default Branch: master
- Last Pushed: 2015-09-01T22:15:45.000Z (over 9 years ago)
- Last Synced: 2025-01-04T14:17:51.013Z (5 months ago)
- Language: PHP
- Size: 500 KB
- Stars: 0
- Watchers: 2
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
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README
# Distance Between Dates
Solution to PHP challenge 018
## Challenge Description
Write a function or class that calculates the difference between two dates in months.
- Assume the input will be two parameters in the format YYYYMM BUT not strings, integers (e.g. 201508).
- Assume there are no incorrect dates (e.g. 201513)
- Many of these date calculations need to be executed per request, so make your solution as performant as possible. The winner will be based on the fastest solution.
The output should be an integer representing the number of months between the two dates.
Example: If the inputs were `201501` and `201412`, the output should be `1`. If the inputs were reversed the output should be `-1`.
## Usage
Install dependencies, run tests
```
$ composer install
$ vendor/bin/phpunit
$ tests/speedtest
```
## Example Output
```
$ vendor/bin/phpunit ; tests/speedtest
PHPUnit 4.8.6 by Sebastian Bergmann and contributors.
................................................................. 65 / 90 ( 72%)
.........................
Time: 682 ms, Memory: 7.25Mb
OK (90 tests, 90 assertions)
Generating code coverage report in HTML format ... done
Testing algorithms with 48000 samples
'AlgorithmTimestamps' 1.146300 seconds
'AlgorithmSubstr' 0.230900 seconds
'AlgorithmModulus' 0.134983 seconds
```