Create a Java class RecursiveMethods.java and create the following methods inside: ALL THE METHODS NEED TO BE COMPLETED RECURSIVLY. NO LOOPS ALLOWED. - oddEvenMatchRec: the method takes an integer array as a parameter and returns a boolean. The method returns true if every odd index contains an odd integer AND every even index contains an even integer(0 is even). Otherwise it returns false. - sumNRec: The method takes an integer array A and returns the sum of all integers in the parameter array. - nDownToOne: Takes an integer n and prints out the numbers from n down to 1, each number on its own line. - inputAndPrintReverse: Inputs integers from the user until the user enters 0, then prints the integers in reverse order. For this method, you may NOT use an array or any type of array structure, in other words, you may not use any structure to store the user input.

Consider the following equation for the sum of a finite arithmetic series: Sm where n is the number of elements in the series, a is the first element of the series, and a, is the fast element of the series. Write a method that returns the sum of the elements stored in the array in 8 above. The array must be passed to the method as an argument. Your solution should implement the equation for the sum .

PLEASE HELP ME WITH MY JAVA HOMEWORK PLEASE PLEASE! Write a program that stores positive random integers in an array. • Get the element number(length of the array) from the user. It cannot be less than 10. And fill this array andomly. The range is up to you. No duplicate values are allowed. Display the elements. • Your job is to write a method that finds and returns the next biggest positive integer considering the biggest element in this array. • Show me your main method too. DO NOT USE ANY PRE_DEFINED METHODS IN THE JAVA API.

Write a java method that receives a reference to an array of integers and then sorts only the non-perfect numbers. if a number is perfect then it must remain in its current location in the array. Notes: 1) You are not allowed to use the Arrays.sort() method or any other ready-made sorting method. 2) You can not define new arrays. Your sorting must be in-place. 3) A number if perfect if the some of its divisors is equal to the number itself. For example the number 6 is perfect because the sum of its divisors is 1+2+3 = 6 while 8 is not perfect because the sum of its divisors is 1+2+4 = 7 which is not equal to 8.

Write a Java method that takes an array of type int and returns a boolean value. The method returns true if the number of positive elements in the parameter array is larger than the number of negative elements. The method returns false if any of the following conditions is satisfied: • The parameter array is of length of 0 or 1 • The number of positive elements of the parameter array is less than or equal to the number of negative elements • The number of positive elements or negative elements is equal to zero The method's header is as follows. public static boolean verify (int[] x) Sample run Result int[] x = (1, 2, 3}; verify(x); {5}; verify(x); int[] x = {1, 2, 3, -5, -1}; boolean b = verify(x); int[] x = new int[0]; verify(x); false boolean b = int[] x = boolean b = false true false boolean b = BIU A Paragraph +v

Question 2. package sortsearchassigncodeex1; import java.util.Scanner; import java.io.*; // // public class Sortsearchassigncodeex1 { // public static void fillArray(Scanner inputFile, int[] arrIn){ int indx = 0; //Complete code { arrIn[indx] = inputFile.nextInt(); indx++; } }

• Write a recursive method to complete the class BaseRaiseToN. • The method: public static int raiseBToN(int base, int exp) computes and returns the value of Bn using recursion.• What value/values of n will stop the recursion (base case)?• A precondition of this method is that B be a positive number greater than zero Sample Output Enter the base4Enter the exponent 3 4 to 3 is 64

Task 2: Write a static method which takes an ArrayList of Strings and an integer and changes the ArrayList destructively to remove all Strings whose length is less than the integer argument. So if the integer argument is 4 and the ArrayList is: tomato cheese chips fruit butter tea buns pie The output tomato cheese chips fruit butter is:

An incomplete program named w_pl java, which must include three methods, is provided. You must implement two methods within the program as described below. The third method, which is a main method, is already written in the program and you can use it to test your program. The two methods you mast inplement are: • find method • Signature: public statie vold find(int[] a, int x) • Behavior: • Reccives an array of integers a and an integer x • Performs a linear search on a for x. • If x is in a, print the indexes of the aray slots where x is stored (there may be multiple x's in a) on the screen. • Ifx is not in a, print the message "x does not exist" on the screen. Note that you should not use Java's built-in method. Your program must scan and search the array. • isPrifie method • Signature: public statie boolean isPrefix(String s1, String s2) • Behavior: • Receives two strings sl and s2. Assume that length of sl length of s2. Returns true if sl is a prefix of s2 and returns false...

Write a recursive method that displaysa string reversely on the console using the following header: public static void reverseDisplay(String value) For example, reverseDisplay("abcd") displays dcba. Write a test programthat prompts the user to enter a string and displays its reversal.

Subject: Java Programming

In Java: Write a method that multiplies all elements in the array by 3 and returns it to the main method.

import java.util.Scanner; public class LabProgram { // Recursive method to draw the triangle public static void drawTriangle(int baseLength, int currentLength) { if (currentLength <= 0) { return; // Base case: stop when currentLength is 0 or negative } // Calculate the number of spaces needed for formatting int spaces = (baseLength - currentLength) / 2; if (currentLength == baseLength) { // If it's the first line, don't output spaces before the first '*' System.out.println("*".repeat(currentLength) + " "); } else { // Output spaces and asterisks System.out.println(" ".repeat(spaces) + "*".repeat(currentLength) + " "); } // Recursively call drawTriangle with the reduced currentLength drawTriangle(baseLength, currentLength - 2); } public static void drawTriangle(int baseLength) { drawTriangle(baseLength, baseLength); } public static...