(1) Write a Java program that prompts the user to enter an integer number, then it computes its factorial. The integer number should be typed in by the user in response to a prompt message.
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- Write a Java program that repeatedly prompts your user for two integer numbers and uses a recursive method to calculate the product of those two numbers. The program should display the result of the call to the recursive method. The program will terminate when either of the two numbers entered by the user is equal to zero (0). Do not use the multiplication operator ( * ) in your proposed solution.Instruction: Write a Java program that reads a positive, non zero integer as input and checks if the integer is deficient, perfect, or abundant. A positive, non-zero integer, N, is said to be perfect it the sum of its positive proper divisors (i.e., the positive integers, other than N itself, that divide N exactly) is equal to the number itself. If this sum is less than N, the number is said to be deficient. It the sum is greater than N, the number is said to be abundant. The first few perfect numbers are 6, 28, 496, and 8128. | Illustrations: Number 6. 28 For example, the number 6 is perfect, since 6 = 1 + 2 + 3, the number 8 is deficient, since 8>1 + 2+ 4, while the nurmber 12 is abundant, since 12<1+2+3+4+ 6. | Factors of the number less than itself | Sum of Factors 3. 2. 1 14, 7, 4, 2, 1 6. 28 Sample Input/Output: Depicled below are sample oulputs when the program is execuled (Ihe ilems in bold characters are input from the user, while the items in bold italic are calculated and…Write a Java program that will compute the greatest common divisor using recursive method. The gcd(m,n) can be defined recursively as follows: If m % n is zero, gcd(m,n) is n. Otherwise, gcd(m,n) is gcd(n,m%n). Write a main program that prompts the user to enter two integers and displays the greatest common divisor.
- JAVA Question 2: For two integers m and n, their GCD (Greatest Common Divisor) can be computed by a recursive method. Write a recursive method gcd(m,n) to find their Greatest Common Divisor. Method body: If m is 0, the method returns n. If n is 0, the method returns m. If neither is 0, the method can recursively calculate the Greatest Common Divisor with two smaller parameters: One is n, the second one is m mod n (or m % n). The recursive method cannot have loops. Note: although there are other approaches to calculate Greatest Common Divisor, please follow the instructions in this question, otherwise you will not get the credit. main method: Prompt and read in two numbers to find the greatest common divisor. Call the gcd method with the two numbers as its argument. Print the result to the monitor. Example program run: Enter m: 12 Enter n: 28 GCD(12,28) = 4 And here is what I have so far, package CSCI1302;import java.util.*;public class RecursionDemo { public static void…Java Program: Recursive Method There are n people in a room where n is an integer greater then or equal to 2. Each person shakes hands once with every other person. What is the total number of handshakes in the room? Write a recursive method to solve this problem with the following header:public static int handshake(int n)where handshake(n) returns the total number of handshakes for n people in the room. To get you started if there are only one or two people in the room, then:handshake(1)=0handshake(2)=1Write a program that implements a recursive algorithm that prints the factorial of the first 10 digits (1 to 10 and it is optional if you would like to include 0). The program must use a recursive algorithm and can be implemented in Java.
- Determine whether a string is a palindromeA palindrome is a string of characters that reads the same from right to left as it does from left to right, regardless of punctuation and spaces.The specifications for this assignment are: •Write and test a non-recursive solution in Java that determines whether a string is a palindrome •Your program should consist of at least two methods: (1) the main method (2) the method which performs the task of determining whether the specified string is a palindrome. You should name this method isPalindrome. You should name the class that contains your “main” method and the isPalindrome method FindPalindrome. •You must use a Stack and a Queue in your solution: Write your own Stack and Queue based on the Vector in the Java API and use those in your solution. You should name those classes StackVector and QueueVector respectively. You already have access to the relevant exception classes and interfaces for the above ADTs. •All of your belong to a Java…Question 4. Recursion write a Java program.A perfect number is a number whose factors, excluding the number itself, also add up to that number.For example 6 is a perfect number since its factors (other than 6 itself) 1, 2, and 3 also add up to 6 (i.e.,1+2+3 = 6). Write a program that uses a recursion to determine if an integer provided by a user byusing Scanner object is a perfect number or notIn Java - Implementing Recursion to Provide a Product Using recursion, create a program that will allow a user to enter five numbers. The program will provide the product of all five numbers using recursive methods.
- Java Programming: Write a program that reads five integer values from the user, then analyzes them as if they were a hand of cards. When your program runs it might look like this (user input is in orange for clarity): Enter five numeric cards, no face cards. Use 2 - 9. Card 1: 8 Card 2: 7 Card 3: 8 Card 4: 2 Card 5: 9 Pair! (This is a pair, since there are two eights). You are only required to find the hands Pair and Straight.Do not use static variables to implement recursive methods. USING JAVA USING: // P5 public static long computePay(int day) { } You have been offered a job that pays as follows: On the first day, you are paid 1 cent, on the second day, 2 cents, on the third day, 4 cents and so on. In other words, your pay doubles every day. Write a recursive method computePay that for a given day number computes the pay in cents. Assume that you accumulate all the money that you are paid. Write a recursive method computeSavings that computes the sum that you have accumulated on a given day. Show the output of computePay and computeSavings for day number 39.This is for Java Write a recursive function that takes as a parameter a nonnegative integerand generates the following pattern of stars. If the nonnegative integer is 4,then the pattern generated is:**********Also, write a program that prompts the user to enter the number of lines inthe pattern and uses the recursive function to generate the pattern. Forexample, specifying 4 as the number of lines generates the above pattern. Java please