Master Mind - 6 months ago 42

Java Question

I have an array of integer for example:

`{ 30 , 2, 3, 4, 5}`

Is it possible to create a lambda expression (using streams) for making the difference between the first element of the array ( in our example 30) and the sum of the rest of array

`(2+3+4+5 = 13)`

Answer

You could calculate the sum of the last n-1 elements of the array and subtract it from the first element :

```
int result = inputArray[0] - IntStream.of(inputArray).skip(1).sum();
```