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Code Issues Releases Activity

fix: better suggestion

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uetchy
2021-10-07 12:44:01 +09:00
parent dc98bb53d1
commit 248359bb09
2 changed files with 25 additions and 28 deletions
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32
src/util/array.ts
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@@ -1,6 +1,22 @@
export function shuffleArray<T>(array: T[]): T[] {
import MersenneTwister from 'mersennetwister';
const mt = new MersenneTwister();
export function times<T>(i: T, times: number): T[] {
return Array.from({ length: times }, () => i);
}
export function sample<T>(arr: T[]): T {
return arr[Math.floor(mt.random() * arr.length)];
}
export function sampleMany<T>(array: T[], maximum: number = 1): T[] {
return shuffle(array).slice(0, maximum);
}
export function shuffle<T>(array: T[]): T[] {
for (let i = array.length - 1; i > 0; i--) {
const j = Math.floor(Math.random() * (i + 1));
const j = Math.floor(mt.random() * (i + 1));
const temp = array[i];
array[i] = array[j];
array[j] = temp;
@@ -8,18 +24,6 @@ export function shuffleArray<T>(array: T[]): T[] {
return array;
}
export function sampleFromArray<T>(array: T[], maximum: number): T[] {
return shuffleArray(array).slice(0, maximum);
}
export function fillArray<T>(array: T[], filler: string, maximum: number): T[] {
const deficit = maximum - array.length;
if (deficit > 0) {
array = [...array, ...Array(deficit).fill(filler)];
}
return array;
}
export function compose<T>(arg: T, ...fn: ((arg: T) => T)[]): T {
return fn.reduce((arg, f) => f(arg), arg);
}