thanhnguyennguyen / cff

const maxDistance = (arr) => {

    // put your code here to address problems

    if (arr.length < 2) {

        return -1;

    }

    // keep the minimum element

    let min = arr[0];

    // keep maxDistanceValue

    let maxDistanceValue = -1;

    for (let i = 1; i < arr.length; i++) {

        if (arr[i] < min) {

            min = arr[i];

            continue;

        }

        let distance = (arr[i] - min);

        if (distance > maxDistanceValue) {

            maxDistanceValue = distance;

        }

    }

    return maxDistanceValue;

}

module.exports = maxDistance;