Please help me with this task,thanks!And then filling the code below:

public class ArraySum { /** * Implement a recursive method that takes an integer array, two indices as arguements * calulate the sum from start to end of the array, and return the result. */ public static int arrSum(int[] arr, int start, int end) { // Filling your code here

// End of your code } }

Please make sure it is completed and runable directly!Thanks a lot!

Task 1 Design and implement a recursive method for calculating the sum of an integer 1D-array with given start and end index. If the input index is invalid, please return O instead. For example, Input: [1,2,3,4,5,6], 2,5 Output: 18 Input: [1,2,3,4,5,6], -1,8 Output: 0