Bean array

A Bean array is defined to be an integer array where for every value n in the array, there is also an element 2n, 2n+1 or n/2 in the array.

For example, {4, 9, 8} is a Bean array because
For 4, 8 is present; for 9, 4 is present; for 8, 4 is present.

Other Bean arrays include {2, 2, 5, 11, 23}, {7, 7, 3, 6} and {0}.

The array {3, 8, 4} is not a Bean array because of the value 3 which requires that the array contains either the value 6, 7 or 1 and none of these values are in the array.

Write a function named isBean that returns 1 if its array argument is a Bean array. Otherwise it returns a 0.

If you are programming in Java or C#, the function signature is
   int isBean(int[ ] a)

If you are programming in C or C++, the function signature is
   int isBean(int a[ ], int len) where len is the number of elements in the array.

solution :
first Way

public static int isBean(int[] a)
        {
            int isBean = 1;

            for (int i = 0; i < a.Length; i++)
            {
                int isValid = 0;
                for (int j = 0; j < a.Length; j++)
                {
                    if (a[i] == 2 * a[j] || a[i] == 2 * a[j] + 1 || a[i] == a[j] / 2)
                    {
                        isValid = 1;
                        break;
                    }
                }
                if (isValid == 0)
                    isBean = 0;
            }
            return isBean;
        }

       Second Way

  

 public static int isBean(int [] a)
        {
            int i, j,x,y,z;
            bool isMeera = true, step = false;
            for(i=0;i<a.Length;i++)
            {
                step = false;
                for(j=0;j<a.Length;j++)
                {
                    x = 2 *a[j];
                    y = 2 * a[j] + 1;
                    z = a[j]/2;
                    if (a[i] == x || a[i]==y || a[i]==z)
                        step = true;
                }
                if(j==a.Length && step==false)
                {
                    isMeera =false;
                    break;
                }
            }
            return isMeera ==true ? 1 : 0;

        }