subsequences
v1.0.4 subarray subarrays subsequence subsequences subset subsets
Easily generate subsequences from a provided map, array, or string input.
A subsequence is a sequence that can be derived from another sequence by removing zero or more elements, without changing the order of the remaining elements.
Install
pnpm add subsequences
yarn add subsequences
npm install subsequences
Basic Usage
import { Subsequence } from "subsequences";
Generate subsequence from Array
const subsequences = Subsequence.fromArray(["1", "2", "3", "4"]);
console.log({ subsequences });
Output
{
"subsequences": [
["1", "2", "3", "4"],
["1", "2", "3"],
["1", "2", "4"],
["1", "2"],
["1", "3", "4"],
["1", "3"],
["1", "4"],
["1"],
["2", "3", "4"],
["2", "3"],
["2", "4"],
["2"],
["3", "4"],
["3"],
["4"]
]
}
Generate subsequence from String
const subsequences = Subsequence.fromString("1234");
console.log({ subsequences });
Output
{
"subsequences": [
["1", "2", "3", "4"],
["1", "2", "3"],
["1", "2", "4"],
["1", "2"],
["1", "3", "4"],
["1", "3"],
["1", "4"],
["1"],
["2", "3", "4"],
["2", "3"],
["2", "4"],
["2"],
["3", "4"],
["3"],
["4"]
]
}
Advanced Usage
Instantiate with Map (Key/Value Pairs)
import { Subsequence } from "subsequences";
const subsequences = new Subsequence([
["first", "1"],
["second", "2"],
["third", "3"],
["fourth", "4"],
]);
console.log(subsequences.entrySubsequences);
console.log(subsequences.i18nSubsequences);
console.log(subsequences.keySubsequences);
console.log(subsequences.valueSubsequences);
entrySubsequences output
[
["first_1", "second_2", "third_3", "fourth_4"],
["first_1", "second_2", "third_3"],
["first_1", "second_2", "fourth_4"],
["first_1", "second_2"],
["first_1", "third_3", "fourth_4"],
["first_1", "third_3"],
["first_1", "fourth_4"],
["first_1"],
["second_2", "third_3", "fourth_4"],
["second_2", "third_3"],
["second_2", "fourth_4"],
["second_2"],
["third_3", "fourth_4"],
["third_3"],
["fourth_4"]
]
i18nSubsequences output
[
{
"key": "first1_second2_third3_fourth4",
"values": { "first": "1", "second": "2", "third": "3", "fourth": "4" }
},
{
"key": "first1_second2_third3",
"values": { "first": "1", "second": "2", "third": "3" }
},
{
"key": "first1_second2_fourth4",
"values": { "first": "1", "second": "2", "fourth": "4" }
},
{ "key": "first1_second2", "values": { "first": "1", "second": "2" } },
{
"key": "first1_third3_fourth4",
"values": { "first": "1", "third": "3", "fourth": "4" }
},
{ "key": "first1_third3", "values": { "first": "1", "third": "3" } },
{ "key": "first1_fourth4", "values": { "first": "1", "fourth": "4" } },
{ "key": "first1", "values": { "first": "1" } },
{
"key": "second2_third3_fourth4",
"values": { "second": "2", "third": "3", "fourth": "4" }
},
{ "key": "second2_third3", "values": { "second": "2", "third": "3" } },
{ "key": "second2_fourth4", "values": { "second": "2", "fourth": "4" } },
{ "key": "second2", "values": { "second": "2" } },
{ "key": "third3_fourth4", "values": { "third": "3", "fourth": "4" } },
{ "key": "third3", "values": { "third": "3" } },
{ "key": "fourth4", "values": { "fourth": "4" } }
]
keySubsequences output
[
["first", "second", "third", "fourth"],
["first", "second", "third"],
["first", "second", "fourth"],
["first", "second"],
["first", "third", "fourth"],
["first", "third"],
["first", "fourth"],
["first"],
["second", "third", "fourth"],
["second", "third"],
["second", "fourth"],
["second"],
["third", "fourth"],
["third"],
["fourth"]
]
valueSubsequences output
[
["1", "2", "3", "4"],
["1", "2", "3"],
["1", "2", "4"],
["1", "2"],
["1", "3", "4"],
["1", "3"],
["1", "4"],
["1"],
["2", "3", "4"],
["2", "3"],
["2", "4"],
["2"],
["3", "4"],
["3"],
["4"]
]
npm i subsequences
Homepage
github.com/forcir/subsequencesMetadata
- MIT
- Whatever
- Forcir Engineering
- released 8/14/2023