Finds the locations of all local maximum values in a list of numbers.

*

* Examples:

* int[] data1 = {2,9,1,30,15};

* peaks(data1) -> [1,3] since 9 and 30 are local maximal values

* int[] data2 = {23,1,-3,2,0,25,1,24,15,25,4,-2,-25};

* peaks(data2) -> [0,3,5,7,9]

* int[] data3 = {-123455};

* peaks(data3) -> [0]

*

* return an array storing the locations (index values) of all local maxima in the input array.

* The size of this array will match the number of local maxima.

public static int[] peaks(int[] data){

return 0;

}