Java programming

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

For example, {2,10,9,3} is a Bean array because

2 = 3-1

10 = 9 +1

3 = 2+1

9 = 10 - 1

Other Bean array includes {2,2,3,3,3}, { 0,-1,1}

The array {3,4,5,7} is not a Bean Array because of the value 7 which requires that the array contains either the value 6(7-1) or 8 (7+1) but neither array

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

Java programming signature is

int isBean(int[]na)