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- Java code: final static Scanner cin = new Scanner(System.in); public static void main(String[] args) { out.println("CPS 151 In-class assignment 3 by ___ your name here ___\n"); out.print("Enter n: "); int n = cin.nextInt(); long f = fib(n); out.println("\nfib(" + n + ") = " + f); out.println("\nCPS 151 In-class assignment 3 complete"); } // end main // standard fibonacci number computation using recursion static long fib(int n) { if (n < 0) terminate("Negative argument value not allowed, program ended"); if (n <= 1) return n; else return fib(n - 1) + fib (n - 2); } // end fib private static void indent(int level) { for(int Lcv = 1; Lcv <= level; Lcv++) out.print(" "); } // end indent private static void terminate(String errorMessage) { out.println(errorMessage); System.exit(1); } // end terminateJava Questions - (Has 2 Parts). Based on each code, which answer out of the choices "A,B,C,D,E" is correct. Each question has one correct answer. Thank you. Part 1 - 3. Given the following code, the output is __. class Base { private int x = 5; }class Derived extends Base { x = 6; }public class Sample { public static void main(String[] args) { int x = 7; Derived d1 = new Derived(); System.out.print(d1.x); }} A. 0B. 5C. 6D. 7E. Error message Part 2 - 4. A class Animal has a subclass Mammal. Which of the following is true? A. class Animal extends Mammal { }B. class Mammal extends Animal { }C. class Animal implements Mammal { }D. class Mammal implements Animal { }E. class Mammal { Animal a1 = new Animal(); }4.31 LAB: Months until payoff (JAVA) Write a program in java that reads a loan amount, payment amount, and interest rate as inputs and outputs the number of payments required until the loan is paid. Interest is added to current balance before a payment is applied. Ex: If current balance is $100.00 and the interest rate is 0.02, the new balance is $102.00 before a payment is applied. All values are doubles. import java.util.Scanner; public class LabProgram { public static void main(String[] args) { Scanner scnr = new Scanner(System.in); /* Type your code here. */ }}
- 4.34 LAB: Draw upside down triangle (JAVA) Write a program in java that outputs a right triangle of asterisks given the height as input. Each line ends with a blank space. Ex: If the input is: 3 the output is: * * * * * * Code starts here: import java.util.Scanner; public class LabProgram { public static void main(String[] args) { Scanner scnr = new Scanner(System.in); /* Type your code here. */ }}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(spaces) + "*".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…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…
- Following programs contain syntax/logical errors. Underline the error and explain precisely the cause of the error to get any credit. Just underlining will not be given credit. [2.5x2=5] i. interface P{ void fun(int x) ; } ------------------------ class S implements P{ public void funny(){ System.out.print(“OOP is funny”); } public static void main(String args[]){ S s1 = new S(); s1.funny() } } ii. public class A{ int x; void A(int x) { this.x=x; System.out.println("in Class A"); } public static void main(String[] args){ new A(5); }Code 16-1 /** This class has a recursive method. */ public class EndlessRecursion { public static void message() { System.out.println("This is a recursive method."); message(); } } Code 16.2 /** This class has a recursive method message, which displays a message n times. */ public class Recursive { public static void messge (int n) { if (n>0) { System.out.println (" This is a recursive method."); message(n-1); } } } Task #1 Tracing Recursive Methods 1. Copy the file Recursion.java (see Code Listing 16.1) from the Student Files or as directed by your instructor. 2. Run the program to confirm that the generated answer is correct. Modify the factorial method in the following ways: a. Add these lines above the first if statement: int temp; System.out.println("Method call -- " + "calculating " + "Factorial of: " + n); Copyright © 2019 Pearson Education, Inc., Hoboken NJ b. Remove this line in the recursive section at the end of the method: return…The type of recursion implemented in the following code is a tail recursion (True or False) ? Please explain/ justify your answer. public class ClassTest { public int test(int val) { if (val <= 0){ return val +1; } else return test(val-1) - test(val-2); } public static void main(String[] args) { ClassTest obj = new ClassTest(); int result = obj.test(4); System.out.println("Output is: " + result); } }
- Rewrite the private static int recurseMax method without using Java API public class Recursion{ public static void main(String[] args){ // My tests (DO NOT MODIFY!) int[] a = {3,2,6,4,15,7,9,8,6}; p(recurseSum(a)); // Sum should be 60 p(recurseMax(a)); // Max should be 15 // End of tests! } // Recursive methods below here... public static int recurseSum(int[] a){ // TODO: This is the wrapper method. You must complete this AND implement helper method int total = recurseSum(a, a.length); return total; } private static int recurseSum(int[] a, int i){ if (i <= 0) return 0; return (recurseSum(a, i - 1) + a[i - 1]); } public static int recurseMax(int[] a){ int max = recurseMax(a, a.length); return max; } private static int recurseMax(int[] a, int i){ if(i == 1) return a[0]; return Math.max(a[i-1], recurseMax(a, i-1)); } //…4.33 LAB: Draw right-justified triangle (JAVA) Write a program in java to draw a right-justified triangle given the height as input. The first row has one asterisk (*) and increases by one for each row. Each asterisk is followed by a blank space and each row ends with a newline. Code starts here: import java.util.Scanner; public class LabProgram { public static void main(String[] args) { Scanner scnr = new Scanner(System.in); /* Type your code here. */ }}Java Program create a prog that will compute the final grade for a certain student and will display the final grade and a remark if it is passed or failedPass = 75 aboveFailed = 74 belowCS= 60% quiz + 40 assignmentPG =[ 2(Pcs) + PE] / 3TMG = [2(Mcs) +ME] /3MG = [2(TMG) + PG] / 3TFG = [Fcs +ME + SFE] /3FG = [2(TFG) + MG ] / 3sample output:enter name of student: Cruzenter quiz Score: 75enter assignment Score: 75enter PE Score: 75PG of Cruz is : 75enter Mquiz Score: 75enter Massignment Score: 75enter ME Score: 75MG of Cruz is: 75enter Fquiz Score: 75enter Fassignment Score: 75enter SFE Score: 75enter FE Score: 75FG of Cruz is : 75congrats you PASSHAVE A SCREENSHOT OF YOUR ENTIRE OUTPUT PROG PUT IT IN DOCS FORM TOGETHER WITH YOUR CODE which should be in .txt formatlastnamePrelimLabExam