public class Flowers public static void main(String[] args) { // Step 3: Create an array list of String called garden 6 7 18 // Step 4: Print the array list 19 20 // Step 5: Add "rose", 21 daisy", and "violet" in that order 22 23 // Step 6: Print the array list 24 25 26 // Step 7: Add "petunia" at index 0 27 28 29 // Step 8: Add 30 "pansy" at index 2 31 32 // Step 9: Print the array list 33 34 35 // Step 10: Replace the element at index 2 with "marigold" 36 37 38 // Step 11: Replace the last element with "zinnia" 39 40 41 42 // Sten 12: Print the

public class Flowers public static void main(String[] args) { // Step 3: Create an array list of String called garden 6 7 18 // Step 4: Print the array list 19 20 // Step 5: Add "rose", 21 daisy", and "violet" in that order 22 23 // Step 6: Print the array list 24 25 26 // Step 7: Add "petunia" at index 0 27 28 29 // Step 8: Add 30 "pansy" at index 2 31 32 // Step 9: Print the array list 33 34 35 // Step 10: Replace the element at index 2 with "marigold" 36 37 38 // Step 11: Replace the last element with "zinnia" 39 40 41 42 // Sten 12: Print the

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Problem (class MergeSalary)First, write a Java method merge that takes as parameter a non-empty double array representingemployees’ salaries. The method merges the values of every 2 adjacent elements. put themerged values at the beginning of the array, and put 0 in the remaining positions. Suppose thatthe original array will contain an even number of elements.Second, write two java methods readArray(int[]a) and printArray(int[]a) thatreads/writes the elements of an array passed in parameter from/to the standard input/output.Finally, Use the following main method to test your different methods:public class MergeSalary{ private static Scanner input = new Scanner(System.in); public static void main(String[] args) { double[] salaries = new double[10]; System.out.print("Enter 10 salaries: "); readArray(salaries); merge(salaries); System.out.print("Salaries after merge: "); printArray(salaries); }}
java: // Class to do MergeSort and QuickSort on int arrays and test them public class MergeQuickSorts { // Create a main to test MergeSort and QuickSort for // three cases - Sorted Aray, Reverse Sorted Array, Random Array // Each array should be size 50 // For the sorted array use the entries 1, 2, 3......50 // For the reverse sorted array use the entries 50, 49, 48.....1 // For the random array use ints between 1 and 50 inclusive, duplicates allowed // For each of the 6 sorts print the array before and after the sort // and show clearly which sort is being done public static void main(String[] args) { }
public class ReplaceEvenWithZero { public static void main(String[] args) { int[]a = new int[]{14, 2, 19, 3, 15, 22, 18, 7, 44, 39, 51, 78} ; // Print array a for (int i = 0; i < a.length; i++) { System.out.print(a[i] + " "); } System.out.println(); // Replace the even elements. replaceEven(a); // Print array a again to see new elements. for (int i = 0; i < a.length; i++) { System.out.print(a[i] + " "); } System.out.println(); } /** Replace the even elements in the given array with 0 @param arr the array to use for the replacements */ public static void replaceEven(int[] arr) { //-----------Start below here. To do: approximate lines of code = 2 // Write a for loop to go through each element, determine if it is even //If so, replace with 0. Hint: use the modulus operator % to determine if an…
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Find a duplicate (20 points). Write a program FindDuplicate.java that reads n integer arguments from the command line into an integer array of length n, where each value is between is 1 and n, and displays true if there are any duplicate values, false otherwise. java FindDuplicate 2 10 8 5 4 1 3 6 7 9 false java FindDuplicate 4 5 2 1 2 true
6. the grade is under 20 which is outlier, remove it from the array list. 7. Print array list using System.out.println() 8. Use indexOf to print index of 80. 9. Use get function. 10. What is the difference between get and index of? 11. Print the values of the array list using Iterator class. 12.. Delete all the values of the array list using clear function. 13. Print all the values of the array after you execute clear using System.out.println(). what is the result of using clear function? 14. What is the shortcoming of using array List?
class Main { // this function will return the number elements in the given range public static int getCountInRange(int[] array, int lower, int upper) { int count = 0; // to count the numbers // this loop will count the numbers in the range for (int i = 0; i < array.length; i++) { // if element is in the range if (array[i] >= lower && array[i] <= upper) count++; } return count; } public static void main(String[] args) { // array int array[] = {1,2,3,4,5,6,7,8,9,0}; // ower and upper range int lower = 1, upper = 9; // throwing an exception…
JAVA Chapter 9 Multidimensional Arrays and the ArrayList Class Write a value returning method that returns the sum of the elements in the last column of each row in a two-dimensional array of ints. Include code to test your method.
Public Class Utilities { replaceCharacter Method public static void replaceCharacter(char[] array, char target, char replacement) Replaces the target character in the array with the specified replacement. You can assume the array parameter will not be null. You may only use one auxiliary method. Your implementation must be recursive and you may not use any loop construct. Do not use ++ or -- in any recursive call argument. For example, use index + 1, instead of index++. Parameters: array - target - replacement -
Create a class: “Question 1” with data members: 1D integer array of maximum size: 100, n(int). Create a dynamic constructor which takes input of n and n no. of array elements. Apartfrom taking input this class also displays the maximum and minimum elements from the givenarray elements.