1.
public static void main(String[] args) {
		int[] numbers = {1,2,3,4,5,6,7,8,9,10};
		
		for(int i=0; i<numbers.length-1; i++) {
			System.out.print(numbers[i]+ " ");
		}
		System.out.println();
	}
//output:  1 2 3 4 5 6 7 8 9 

2.
public static void main(String[] args) {
		int[] numbers = {10,9,8,7,6,5,4,3,2,1};
		
		for(int i=0; i<numbers.length-1; i++) {
			if(numbers[i] > numbers[i+1]) {
				numbers[i+1] = numbers[i+1] * 2;
				
				System.out.print(numbers[i+1]+ " ");
			}
		}
		System.out.println();
	}
//output: 18 16 14 12 10 8 6 4 2