ranking and averages

ranking.js

const AverageRanking = arr => {
  const reducer = (total,currentValue) => total + currentValue
  const sum = arr.reduce(reducer);
  return sum;
}


const RankingAscending = arr => {
  for(let i =0;i<arr.length;i++){
    for(let j =0;i<arr.length;j++){
      if(arr[i]>arr[j]){
        let tem = arr[i];
        arr[i]=arr[j];
        arr[j]=tem;
      }
    }
  }
}