I have array

```
var array = [4,2,6,8,1,6,5,2];
var samNeeded = 20;
```

as above i need to get how many items need to sum from start of the array to get sum needed

example needed output

```
var output = [4,2,6,8]
```

as first four items need to sum up to get the total 20

Here is my solution:

Not sure this is the best approach, but it works for your example:

You could use

`Array#reduce`

.