EasyJavaScriptPractice mode: untimed, 3 hints

Moving average

movingAverage(values, size) returns the average of every run of size consecutive values, in order. With fewer than size values it returns an empty array.

The code has exactly one planted bug. Reproduce it with the tests, fix it with the smallest change, then submit.

Visible tests

three windows of two
- movingAverage([1,2,3,4], 2) → [1.5,2.5,3.5]
too few values
- movingAverage([10,20], 3) → []

Hints 0/3

// Average of every run of `size` consecutive readings, in order.
function movingAverage(values, size) {
  const out = [];
  for (let i = 0; i + size < values.length; i++) {
    let sum = 0;
    for (let j = i; j < i + size; j++) sum += values[j];
    out.push(sum / size);
  }
  return out;
}

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