everyutil/number/movingAverage.js

A comprehensive library of lightweight, reusable utility functions for JavaScript and TypeScript, designed to streamline common programming tasks such as string manipulation, array processing, date handling, and more.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.movingAverage = void 0;
/**
 * Calculates the simple moving average (SMA) of an array with a given window size.
 * For example, movingAverage([1,2,3,4,5], 3) returns [2,3,4].
 * @author @dailker
 * @param {number[]} array - The input array of numbers.
 * @param {number} windowSize - The size of the moving window.
 * @returns {number[]} The array of moving averages.
 */
function movingAverage(array, windowSize) {
    const result = [];
    for (let i = 0; i <= array.length - windowSize; i++) {
        const window = array.slice(i, i + windowSize);
        result.push(window.reduce((a, b) => a + b, 0) / window.length);
    }
    return result;
}
exports.movingAverage = movingAverage;