public class Question
{

public int[] mystery(int[] nums ){
for (int i =0 ; i < nums.length-1; i++)
	{
	if(nums[i+1] < nums[i])
		{
		//swap  nums[i+1] and nums[i]
		int temp = nums[i+1];
		nums[i+1] = nums[i];
		nums[i] = temp;
		}
	}
return nums;
}

public Question()
{
int[] someNums =  {100, 20, 90, 80} ;
someNums  = mystery(someNums);
print(someNums) ;
}


void print(int[] nums){
for (int n : nums)
	System.out.print(n + ",");
System.out.println();
}




}