let number1 = Number(prompt("Add meg az intervallum elejét:"))
let number2 = Number(prompt("Add meg az intervallum végét:"))
let listaSzamok = []


if (number1 < number2) {
    for (; number1 <= number2; number1++) {
        listaSzamok.push(number1)
    }
} else {
    for (; number1 >= number2; number1--) {
        listaSzamok.push(number1)
    }
}

console.log(listaSzamok);

let sum = listaSzamok.reduce((accumulator, currentValue) => {
    return accumulator + currentValue
})

console.log(sum);
console.log(listaSzamok.length);