https://github.com/shinnn/repetition-ranges

Get start/end positions where a given value consecutively appears in the array
https://github.com/shinnn/repetition-ranges

Last synced: 27 days ago
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Get start/end positions where a given value consecutively appears in the array

• Host: GitHub
• URL: https://github.com/shinnn/repetition-ranges
• Owner: shinnn
• License: isc
• Created: 2016-12-26T09:42:50.000Z (almost 8 years ago)
• Default Branch: master
• Last Pushed: 2018-10-01T04:40:51.000Z (about 6 years ago)
• Last Synced: 2024-10-11T22:47:29.698Z (about 1 month ago)
• Language: JavaScript
• Homepage: https://npm.runkit.com/repetition-ranges
• Size: 84 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# repetition-ranges

[![npm version](https://img.shields.io/npm/v/repetition-ranges.svg)](https://www.npmjs.com/package/repetition-ranges)

[![Build Status](https://travis-ci.org/shinnn/repetition-ranges.svg?branch=master)](https://travis-ci.org/shinnn/repetition-ranges)

[![Coverage Status](https://img.shields.io/coveralls/shinnn/repetition-ranges.svg)](https://coveralls.io/github/shinnn/repetition-ranges)

Get start/end positions where a given value consecutively appears in the array

```javascript

import repetitionRanges from 'repetition-ranges';

repetitionRanges(['a', 'b', 'a', 'a', 'b', 'a', 'a', 'a'], 'a');

//=> [{start: 2, end: 3}, {start: 5, end: 7}]

```

| index                      | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |

| :--------------------------|:-:|:-:|:-:|:-:|:-:|:-:|:-:|:-:|

| array                      | a | b | a | a | b | a | a | a |

| (`a` appeared)             | ○ |   | ○ | ○ |   | ○ | ○ | ○ |

| `a` consecutively appeared |   |   | ○ | ○ |   | ○ | ○ | ○ |

## Installation

[Use](https://docs.npmjs.com/cli/install) [npm](https://docs.npmjs.com/getting-started/what-is-npm).

```

npm install repetition-ranges

```

## API

```javascript

import repetitionRanges from 'repetition-ranges';

```

### repetitionRanges(*array*, *searchValue*)

*array*: `Array`  

*searchValue*: any type (the value to resolve its repetition ranges)  

Return: `Array` of objects with `start` and `end` properties

```javascript

repetitionRanges([1, 1, 1], 1); //=> [{start: 0, end: 2}]

repetitionRanges([1, 1, '1', 1, 1, Symbol('1')], 1); //=> [{start: 0, end: 1}, {start: 3, end: 4}]

repetitionRanges(['a', 'b'], 'c'); //=> []

repetitionRanges(['a', 'b', 'a'], 'a'); //=> []

repetitionRanges([], 'a']); //=> []

```

## License

[ISC License](./LICENSE) © 2018 Shinnosuke Watanabe