CodeSignal - Arcade - Intro - JS - absoluteValuesSumMinimization

absoluteValuesSumMinimization.js

function absoluteValuesSumMinimization(a) {
    
    let sum = a.map( i => distanceCalculator(a, i));
    let sumMin = sum.slice().sort((a,b) => a-b)[0];
    
    return a[sum.indexOf(sumMin)];
}

function distanceCalculator(a, val){
    return a.map(i => Math.abs(i-val)).reduce((sum, num) => sum + num);
}