let array = [1, 2, 2, 9, 10, 20, 21, 100]
let max = Math.max(...array) // 最大
let min = Math.min(...array) // 最小
let sum = 0
let average = 0 // 平均
for(let i = 0; i < array.length; i++) {
sum += array[i]
average = sum / array.length
}
let array = [1, 2, 2, 9, 10, 20, 21, 100]
let max = Math.max(...array) // 最大
let min = Math.min(...array) // 最小
let sum = 0
let average = 0 // 平均
for(let i = 0; i < array.length; i++) {
sum += array[i]
average = sum / array.length
}