In JAVA Recursive Array Search.  Define and test a recursive method for a sequential search of an integer array. The method should return the index of the searchKey in the array, or return -1 if the searchKey is not found.

Write a RECURSIVE function, without using any loops, that prints the contents of a matrix with 3 columns.  The function should take the matrix and the number of rows as arguments. void print_matrix(int arr[][3], int num_rows);

1. The sorted values array contains 16 integers 5, 7, 10, 13, 13, 20, 21, 25, 30,32, 40, 45, 50, 52, 57, 60. Indicate the sequence of recursive calls that are made tobinaraySearch, given an initial invocation of binarySearch(32, 0, 15).show only the recursive calls. For example, initial invocation is binarySearch(45,0,15)where the target is 45, first is 0 and last is 15.

nputer Science I| for Majors home > 13.4: Recursive Helper Methods E zyBa Feedb PARTICIPATION 13.4.3: Compute recursively to determine the sum of values in an array. АCTIVITY Assume you have the following method: public static int sum(int [] a) To compute the sum of the values in an array, add the first value to the sum of the remaining values, computing recursively. Rearrange the following lines to design a recursive helper method to solve this problem. Not all lines are useful. Mouse: Drag/drop Keyboard: Grab/release Spacebar (or Enter). Move 0000 Cancel Esc Unused FindSum.java Load default template.. return a[start] + sumHelper(a, start - 1); import java.util.Scanner; return alstart] + sumHelper(a, start + 1); public class FindSum { if (start == a. length) { return a[start); } if (start == a.length - 1) { return alstart]; } public static int sum(int[0 a) if (a.length == 0) { return -1; } return sumHelper(a, 0); if (a.length == 0) { return 0; } public static int sumHelper(int [] a,…