Competitive Gaming

Photo by Clem Onojeghuo on Unsplash

Here is the code challenge I solved this week!

A group of friends are playing a video game together. During the game, each player earns a number of points. At the end of a round, players who achieve at least a certain rank get to “level up” their characters to gain increased abilities. Given the scores of the players at the end of a round, how many players will be able to level up?

My approach to the challenge:

1. Sort the scores from greatest to lowest.
2. The first score gets the highest rank (1).
3. Go down the scores and assign ranks in descending order (highest score to lowest).
4. If the ranks are greater than k, and if the score is more than 0, the number of players who will level up increase.
5. Return the number of players leveling up.

function numPlayers(k, scores) {
    const sortedScores = scores.sort(function(a, b) {return b-a})
    let rank = 0
    let levelUp = 0
    for (let i = 0; i < sortedScores.length; i++) {
        if (i == 0) {
            rank = 1
        } else if (sortedScores[i] != sortedScores[i-1] {
            rank = i + 1
        }
        if (rank <= k && sortedScores[i] > 0) {
            levelUp+=1
        }
    }
    return levelUp
}

That’s all to it!