How do I calculateAverage?-CodePudding

I need to create a function in Javascript that is called calculateAverage which accepts arrays of numbers. The function should return the average in the array. If the array is empty, return 0.

I am new to coding and have only studied python.

int calculateAverage(int numbers_count, int* numbers) {
calculateAverage([50, 21, 80])
calculateAverage([30, 39, 58, 11])
calculateAverage([200])
calculateAverage([])

CodePudding user response：

this can be a solution:

 function calculateAverage(arr) {
  const sum = arr.reduce((acc, curr) => acc   curr, 0)
  return sum / arr.length
}

const arr = [5,10,1,5,20,50,30,25];

const average = calculateAverage(arr);
console.log(average)

CodePudding user response：

you can do that like this...

function calculateAverage(arr) {
  const rslt = arr.reduce((a, b) => a   b, 0) / arr.length;
  return 0 === ~~rslt ? 0 : rslt;
}

console.log(calculateAverage([30, 39, 58, 11]));