const count = 1e6;
const data = Array.from({length: count}).map(() => Math.random());

const simpleSum = (data) => {
  let sum = 0;
  for(let i=0; i < data.length; i += 1) {
    sum += data[i];
  }
  return sum;
}

const sumByTwo = (data) => {
  let sum = 0
  for(let i=0; i < data.length; i += 2) {
    sum += data[i] + data[i + 1];
  }
  return sum;
}

const sumByFour = (data) => {
  let sum = 0
  for(let i=0; i < data.length; i += 4) {
    sum += data[i]
      + data[i + 1]
      + data[i + 2]
      + data[i + 3];
  }
  return sum;
}

const sumByTen = (data) => {
  let sum = 0;
  for(let i=0; i < data.length; i += 10) {
    sum += data[i] + data[i + 1]
      + data[i + 2] + data[i + 3]
      + data[i + 4] + data[i + 5]
      + data[i + 5] + data[i + 7]
      + data[i + 8] + data[i + 9];
  }
  return sum;
};

Teardown JS

Test cases

Test #1

Title *

Async

Code *simpleSum(data);

Test #2

Title *

Async

Code *

sumByTwo(data);

Test #3

Title *

Async

Code *sumByFour(data);

Test #4

Title *

Async

Code *sumByTen(data);

Test case details

Preparation Code

Test cases

Test #1

Test #2

Test #3

Test #4