locutus/python/math/dist.js

Locutus other languages' standard libraries to JavaScript for fun and educational purposes

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.dist = dist;
function dist(p, q) {
    //      discuss at: https://locutus.io/python/dist/
    // parity verified: Python 3.12
    //     original by: Kevin van Zonneveld (https://kvz.io)
    //          note 1: Returns Euclidean distance between two same-length numeric vectors.
    //       example 1: dist([0, 0], [3, 4])
    //       returns 1: 5
    //       example 2: dist([1, 2, 3], [1, 2, 3])
    //       returns 2: 0
    //       example 3: dist([-1, 2], [2, -2])
    //       returns 3: 5
    if (!Array.isArray(p) || !Array.isArray(q)) {
        throw new TypeError('dist() requires array-like arguments');
    }
    if (p.length !== q.length) {
        throw new Error('dist() points must have the same dimension');
    }
    let sum = 0;
    for (let i = 0; i < p.length; i += 1) {
        const left = Number(p[i]);
        const right = Number(q[i]);
        const delta = left - right;
        sum += delta * delta;
    }
    return Math.sqrt(sum);
}