Could anyone please explain me my mistake at function call In driver code....?

Question

https://code.sololearn.com/cM03BaAe12dm/?ref=app

Answer 1

Your calling method is in another class. So need to call thorough class Or object.
Solution res = Solution.findMaxMin(arr,n);

And for compatible types use int array..
int[] arr = new int[n];

Answer 2

check this.
https://www.sololearn.com/compiler-playground/cO4pmHsgs0sB

I don't know what the exercise is about. But you can see if you can get inspired by my correction