f1lander

const ar = [10, 20, 20, 10, 10, 30, 50, 10, 20];

const getPairs = (n, ar) => {
    let pairs = 0, i = 0;
    ar.sort((a, b) => a - b);

    while (i < n) {

        const count = ar.filter(item => item === ar[i]).length;
        if (count >= 2) {

f1lander

/**

Example Code for developer position application

Write some code, that will flatten an array of arbitrarily nested arrays of integers into a flat array of integers. e.g. [[1,2,[3]],4] -> [1,2,3,4].

For this code I'll use JS (es6) running in NodeJS v11

Instructions:

f1lander

const xtreme_math = require("../../ceutek/deunitek/xtreme-math");
const math = new xtreme_math(3);
console.log(math.square); // resultado: 9.

f1lander

const xtreme_math = require("../../ceutek/deunitek/xtreme-math");
const math = new xtreme_math(3);
console.log(math.square); // resultado: 9.