es-next-tools/dist/math/median.js

A comprehensive utility library for JavaScript and TypeScript that provides a wide range of functions for common programming tasks, including mathematical operations, date manipulations, array and object handling, string utilities, and more.

/**
 * Calculates the median of a list of numbers.
 * @param {...number[]} numbers - The numbers to calculate the median of.
 * @returns The median of the numbers.
 * @example
 * median(1, 2, 3, 4, 5); // 3
 */
export function median(...numbers) {
    let sorted = [];
    if (numbers.length <= 2)
        sorted = numbers;
    else
        sorted = numbers.sort((a, b) => a - b);
    const mid = ~~(sorted.length / 2);
    return sorted.length % 2 !== 0
        ? sorted[mid]
        : (sorted[mid - 1] + sorted[mid]) / 2;
}