23 lines
721 B
TypeScript
23 lines
721 B
TypeScript
import { isNumber } from 'mathjs';
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export const round = (num: number, decimals = 2) => {
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const factor = Math.pow(10, decimals);
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return Math.round((num + Number.EPSILON) * factor) / factor;
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};
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export const average = (arr: (number | null)[]) => {
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const filtered = arr.filter(isNumber);
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return filtered.reduce((p, c) => p + c, 0) / filtered.length;
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};
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export const sum = (arr: (number | null)[]): number =>
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round(arr.filter(isNumber).reduce((acc, item) => acc + item, 0));
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export const min = (arr: (number | null)[]): number =>
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Math.min(...arr.filter(isNumber));
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export const max = (arr: (number | null)[]): number =>
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Math.max(...arr.filter(isNumber));
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export const isFloat = (n: number) => n % 1 !== 0;
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