# How to Find the Means of an Array, By Counting The Digit Simultaneously

Excuse me all, I want to ask one question, it was bothering me right now. I think it’s a quite simple. But i don’t know how to solve it. Perhaps you all know about this.

This question is an array like this `[3,4,5]` and the answer is 5

The algorithm to get the answer is by doing this things (Every decimal number will be rounds up to the next largest integer)

So the answer that we will get is 5.

For other question is like `[8,1,8,8,0]` the output will be 7 Is there is someone that maybe knows how to solve this, i use javascript for this algorithm.

But still can’t finding the way to solve this

Every help would be nice,

thanks

You could iterate whoile you have a length greater than one and map a new array of a smaller array.

```let array = [8, 1, 8, 8, 0];

console.log(...array);
while (array.length > 1) {
let l = array
array = array.slice(1).map(r => {
let v = Math.ceil((l + r) / 2);
l = r;
return v;
});
console.log(...array);
}```