Java非素数(Java non-prime numbers)

 我想在一个区间内打印非素数并计算数量。 例如，在3到10之间，此素数的非素数是4,6,8,9。 
 
 我创建了一个数组并将非主数字放入数组中。 我可以在屏幕上打印它们但是当我试图到达数组上的每个元素时， nonPrime[0]和nonPrime[1]似乎为0 。 此外，我需要足够的维数组，因为它无助于计算非素数的数量。 
 
 这就是我尝试过的： 
 
public static void main (String[] args)
{       
    int x=10;//end of the interval
    int y=2;//first of the interval
    int[]nonPrime=new int[10];
    for(int i=y+1;i<x;i++)
    {
        for(int j=2;j<x;j++)
        {  
            if(i!=j)
            {
                if((i%j==0))
                {
                   nonPrime[j]=i;
                   break;
                }
            }
        }
    }
}

I want to print non-prime numbers in an interval and calculate the quantity of numbers. For example, between 3 and 10, the non-prime numbers are 4,6,8,9 for this interval.
 
I created an array and put the nonprime numbers into the array. I can print them on the screen but when I tried to reach every single element on the array nonPrime[0] and nonPrime[1] seems 0. Also I need enough dimension array because it doesn't help to calculate the quantity of non-prime numbers.
 
That's what I tried:
 
public static void main (String[] args)
{       
    int x=10;//end of the interval
    int y=2;//first of the interval
    int[]nonPrime=new int[10];
    for(int i=y+1;i<x;i++)
    {
        for(int j=2;j<x;j++)
        {  
            if(i!=j)
            {
                if((i%j==0))
                {
                   nonPrime[j]=i;
                   break;
                }
            }
        }
    }
}

原文：https://stackoverflow.com/questions/35347402