const arr = [1, 2, 3]
let total = 0
for (let i = 0; i < arr.length; i++) {
total += arr[i]
}
console.log(total) //6
const arr = [1, 2, 3]
const sum = arr.reduce((acc, current) =>
acc + current, 0)
console.log(sum)
const arr = [1, 2, 3]
const mapArray = arr.map(value => value * 2)
const reduceArray = arr.reduce((acc, current)=> {
acc.push(current * 2)
return acc
}, [])
console.log(mapArray, reduceArray) // [2, 4, 6]
