'use strict';


function getDifferences(a, b) {
const copyArray1 = [...a];
const copyArray2 = [...b];

const result = [...a, ...b].reduce((acc, item) => {

    if (copyArray1.includes(item) && copyArray2.includes(item)) {
        delete copyArray1[copyArray1.indexOf(item)];
        delete copyArray2[copyArray2.indexOf(item)];
     } else if (copyArray1.includes(item)) {
        delete copyArray1[copyArray1.indexOf(item)];
        acc.difference.push(item);
     } else if (copyArray2.includes(item)) {
        delete copyArray2[copyArray2.indexOf(item)];
        acc.difference.push(item);
     }

     return acc;

}, {difference: []});

return result;
}