06. Print And Sum

function printAndSum(startNum, endNum) {
    let output = '';
    let sum = 0;
    for (let i = startNum; i <= endNum; i++) {
        output += i + ' ';
        sum += i;
    }

    console.log(output);
    console.log(`Sum: ${sum}`);

}


Адванс решение:

function printAndSum(startNum, endNum) {

    let array = Array(endNum - startNum + 1).fill().map((_, i) => startNum + i);
    console.log(`${array.join(' ')}\nSum: ${array.reduce((a,b) => a+b)}`);

}