scores.js

// score data
const dolphinsScores = [97, 112, 101];
const koalasScores = [109, 95, 106];

// helper function to average array values
const avgScore = (array) =>
    // array.reduce iterated through an array and adds each value together.
    // then divide the result agaisn't the legnth of the array to get the average.
    array.reduce((acc, val) => acc + val) / array.length;

// helper function to output results
const printResults = (winner, loser, winAvg, loseAvg, dqOne, dqTwo) => {
    //these use ternary operators, basically a one line IF statement.
    const resultLine = winAvg !== loseAvg ? `The ${winner} win!!` : `It's a tie!!`;
    const doubleDq = `Both Teams Disqualified.`;
    const winAvgLine = `The ${winner} average: ${winAvg}${dqOne === false ? `` : ` - Disqualified`}`;
    const loseAvgLine = `The ${loser} average: ${loseAvg}${dqTwo === false ? `` : ` - Disqualified`}`;
    const finalMessage = `
        ${dqOne && dqTwo ? doubleDq : resultLine}
        ${winAvgLine}
        ${loseAvgLine}
    `;
    console.log(finalMessage);
};

// wrapping main logic into it's own function
const scoreCompare = (teamOne, teamTwo, scoreOne, scoreTwo, dqLimit) => {
    // check if both scores are above dq limit
    if (scoreOne >= dqLimit && scoreTwo >= dqLimit) {
        // team one wins
        if (scoreOne > scoreTwo) {
            printResults(teamOne, teamTwo, scoreOne, scoreTwo, false, false);
            // team two wins
        } else if (scoreOne < scoreTwo) {
            printResults(teamTwo, teamOne, scoreTwo, scoreOne, false, false);
            // tie game
        } else {
            printResults(teamOne, teamTwo, scoreOne, scoreTwo, false, false);
        }
        // else catches if score one or score two is not above the dq limit
    } else {
        // team two dq
        if (scoreOne >= dqLimit && scoreTwo < dqLimit) {
            printResults(teamOne, teamTwo, scoreOne, scoreTwo, false, true);
            // team one dq
        } else if (scoreOne < dqLimit && scoreTwo >= dqLimit) {
            printResults(teamTwo, teamOne, scoreTwo, scoreOne, false, true);
            // double dq
        } else {
            printResults(teamOne, teamTwo, scoreOne, scoreTwo, true, true);
        }
    }
};

// average dolphins scores
const avgDolphins = avgScore(dolphinsScores);
console.log(avgDolphins);

// average koalas scores
const avgKoalas = avgScore(koalasScores);
console.log(avgKoalas);

// run the compare function
scoreCompare("Dolphins", "Koalas", avgDolphins, avgKoalas, 100);