Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Create a class NestedForPatternB. Use nested for-loops that display the following pattern:
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- Complete this codeYou can write a recursive helper method that takes any number of arguments and then call it inside the method, but you cannot use any loops. /** * Decide if it is possible to divide the integers in a list into two sets, * so that the sum of one set is odd, and the sum of the other set is a multiple of 10. * Every integer must be in one set or the other. * For example, oddAndTen([5, 5, 3]) → true, * and oddAndTen([5, 5, 4]) → false. * @param list is a list of integers. * @return true iff there is one odd partition and the other multiple of 10. */public static boolean oddAndTen(List<Integer> list) { // call your recursive helper method return ...} private static boolean oddAndTenHelper(...) { // add any parameters // base case // recursive step}arrow_forwardLab Goal : This lab was designed to teach you more about recursion. Lab Description : Take a string and remove all occurrences of the word chicken and count how many chickens were removed. Keep in mind that removing a chicken might show a previously hidden chicken. You may find substring and indexOf useful. achickchickenen - removing the 1st chicken would leave achicken behindachicken - removing the 2nd chicken would leave a behindSample Data : itatfunitatchickenfunchchickchickenenickenchickchickfunchickenbouncetheballchickenSample Output : 01302arrow_forwardThis is a debugging question - The files provided in the code editor to the right contain syntax and/or logic errors. In each case, determine and fix the problem, remove all syntax and coding errors, and run the program to ensure it works properly. Code - // This class determines the logarithm of a number public class DebugTwelve1 { public static void main(String[] args) throws ArithmeticException { double num = -8.8, result. try { if(num <= 0) throw(new ArithmeticException()); result = Math.log(num); System.out.println("Result is " + result); } catch() { System.out.println("Can't take logarithm for value of zero or lower"); } } }arrow_forward
- how would you do this? this is a non graded practice labarrow_forward1. Divisors: In a class Divisors.java, read in a maximum integer n and use nested loops to print a list of divisors for each of 1 through n as shown in the following transcript. Sample transcript (input underlined): Largest integer? 100 1: 1 2: 1 2 3: 1 3 4: 1 2 4 95: 1 5 19 95 96: 1 2 3 4 6 8 12 16 24 32 48 96 97: 1 97 98: 1 2 7 14 49 98 99: 1 3 9 11 33 99 100: 1 2 4 5 10 20 25 50 100arrow_forwardFix the code below so that there is a function that calculate the height of the triangle. package recursion; import javax.swing.*;import java.awt.*; /** * Draw a Sierpinski Triangle of a given order on a JPanel. * * */public class SierpinskiPanel extends JPanel { private static final int WIDTH = 810; private static final int HEIGHT = 830; private int order; /** * Construct a new SierpinskiPanel. */ public SierpinskiPanel(int order) { this.order = order; this.setMinimumSize(new Dimension(WIDTH, HEIGHT)); this.setMaximumSize(new Dimension(WIDTH, HEIGHT)); this.setPreferredSize(new Dimension(WIDTH, HEIGHT)); } public static double height(double size) { double h = (size * Math.sqrt(3)) / 2.0; return h; } /** * Draw an inverted triangle at the specified location on this JPanel. * * @param x the x coordinate of the upper left corner of the triangle * @param y the y…arrow_forward
- Can you please help me with this, its in java. Thank you. Write classes in an inheritance hierarchy Implement a polymorphic method Create an ArrayList object Use ArrayList methods For this, please design and write a Java program to keep track of various menu items. Your program will store, display and modify salads, sandwiches and frozen yogurts. Present the user with the following menu options: Actions: 1) Add a salad2) Add a sandwich3) Add a frozen yogurt4) Display an item5) Display all items6) Add a topping to an item9) QuitIf the user does not enter one of these options, then display:Sorry, <NUMBER> is not a valid option.Where <NUMBER> is the user's input. All menu items have the following: Name (String) Price (double) Topping (StringBuilder or StringBuffer of comma separated values) In addition to everything that a menu item has, a main dish (salad or sandwich) also has: Side (String) A salad also has: Dressing (String) A sandwich also has: Bread type…arrow_forwardPYTHON: This exercise is a variation on "instrumenting" the recursive Fibonacci program to better understand its behavior. Write a supporting method that counts how many times the fib function is called to compute fib (n) where n is a user input. Hint: To solve this problem, you need an accumulator variable whose value "persists" between calls to fib. You can do this by making the count an instance variable of an object. Create a FibCounter class with the following methods: _init_(self) Creates a new FibCounter, setting its count instance variable to 0. getCount(self) Returns the value of count. fib(self, n) Recursive function to compute the nth Fibonacci number. It increments the count each time it is called. resetCount(self) Sets the count back to 0.arrow_forward
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