fuck big-o notaion

gistfile1.txt

//Gino Di Gregorio

import java.util.*;
import java.util.Scanner;
import java.util.Arrays;
import java.util.Stack;

public class ArrayReverse {
	static Scanner scan = new Scanner(System.in);
	
	public static void main(String[] args){
		System.out.println("Please enter length of Array");
		int size = scan.nextInt();
		int anArray[] = new int[size];
		for(int i = 0; i < size; i++){
			System.out.println("Please enter array value");
			anArray[i] = scan.nextInt();
		}
		reverser(anArray);
	}
	
	public static void reverser(int[] anArray){
		Stack<Integer> arrayValues = new Stack<Integer>();
		for(int i = 0; i < anArray.length; i++){
			arrayValues.push(anArray[i]);
		}
		for(int i = 0; i < anArray.length; i++){
			anArray[i] = arrayValues.pop();
		}
		printArray(anArray);
	}
	
	private static void printArray(int[] anArray){
		System.out.println(Arrays.toString(anArray));
	}
}