Histogram

function histogram(input) {
    let digitsCount = Number(input[0]);

    let p1 = 0;
    let p2 = 0;
    let p3 = 0;
    let p4 = 0;
    let p5 = 0;

    for (let index = 1; index <= digitsCount; index++) {
        let currentNumber = Number(input[index]);

        if (currentNumber < 200) {
            p1++;
        } else if (currentNumber <= 399) {
            p2++;
        } else if (currentNumber <= 599) {
            p3++;
        } else if (currentNumber <= 799) {
            p4++;
        } else if (currentNumber >= 800) {
            p5++;
        }
    }

    console.log(`${(p1 / digitsCount * 100).toFixed(2)}%`);
    console.log(`${(p2 / digitsCount * 100).toFixed(2)}%`);
    console.log(`${(p3 / digitsCount * 100).toFixed(2)}%`);
    console.log(`${(p4 / digitsCount * 100).toFixed(2)}%`);
    console.log(`${(p5 / digitsCount * 100).toFixed(2)}%`);

}

histogram(["3", "1", "2", "999"])