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#javascript #array #.reduce() #if #.length

//Opción 1:
function findAverage(array) {
  if(array.length === 0) {
    return(0);
  }
  return array.reduce((a, b) => a + b, 0) / array.length;
} 

//Opción 2:
var find_average = (array) => {  
  return array.length === 0 ? 0 : array.reduce((a, b)=> a + b, 0)/array.length
}

#javascript #operación #array #.reduce #.length

El promedio de tres números

//OPCIÓN 1
function getGrade (s1, s2, s3) {
  avg = (s1+s2+s3)/3;
  if (avg < 60)  return "F";
    else if (avg < 70) return "D";
    else if (avg < 80) return "C";
    else if (avg < 90) return "B";
    else return "A";
}

//OPCIÓN 2
function getGrade(...scores) {
  let avg = scores.reduce((a, b) => a + b, 0) / scores.length;
  
  if (avg < 60)  return "F";
    else if (avg < 70) return "D";
    else if (avg < 80) return "C";
    else if (avg < 90) return "B";
    else return "A";

Calcular promedio

El promedio de tres números

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