LexoRank

Easily generate lexicographical sort for efficient reordering list item.

Features

Easily generate lexicographical rank between two rank
Easily change of generated rank length with your favorite English letter
Able to generate a list of rank for re-balancing process or initial ranking
Have a method to detect if ranking exceed some threshold

Usage

To generate a rank, first create an instance of LexoRank and call getRankBetween with defined first and second rank

const lexoRank = LexoRank();
final rank = lexoRank.getRankBetween(firstRank: 'aaaa', secondRank: 'cccc');
print(rank); //bbbb

the first rank should be lower than the second rank, if you are unsure just pass reorderPosition when creating LexoRank instance.

To generate a list of rank

final itemsRank = lexoRank.generateInitialRank(sizeOfItems: 100);

you can customize it by providing:

sizeOfItems indicate number of ranks that must be generated.
rankLength: specify initial base rank letter size, default to 5.
startRankLetter: specify start letter to generate the initial the base rank, default is 'a'.
endRankLetter: specify end letter to generate the initial the base rank, default is 'z'.

To check if a list of ranks exceed the limit

final stats = lexoRank.shouldRebalanced(items, maxRankLength: 5);
print(stats.exceeded);

Issues

Please file any issues, bugs or feature request as an issue on our GitHub page.

Contributing

If you would like to contribute to the plugin (e.g. by improving the documentation, solving a bug or adding a cool new feature or you'd like an easier or better way to do something), consider opening a pull request.

License

rebaz94/lexo_rank_generator

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