02. Odd Occurrences

function solution(input) {

    let elements = input.split(' ').map((ele) => ele.toLowerCase());
    let map = generateMap(new Set(elements));

    elements.forEach((ele) => {
        map.set(ele, map.get(ele) + 1);
    });

    let output = "";

    Array.from(map.entries()).forEach((kvpArr) => {
        let [key, value] = kvpArr;
        if (Number(value) % 2 !== 0) {
            output += key + " ";
        }
    });

    console.log(output)

    function generateMap(set) {
        let map = new Map();
        set.forEach((ele) => {
            map.set(ele, 0);
        });

        return map;
    }
}