7. Consider an array that stores the following sequence of integers: 10, 15, 20, 25, 30 Write a Java method that returns the sum of the întegers stored in the array The array must be passed to the method as an argument.
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- Define an array to be a 121 array if all elements are either 1 or 2 and it begins with one or more 1s followed by a one or more 2s and then ends with the same number of 1s that it begins with. Write a method named is121Array that returns 1 if its array argument is a 121 array, otherwise, it returns 0. There is one additional requirement. You should return 0 as soon as it is known that the array is not a 121 array; continuing to analyze the array would be a waste of CPU cycles. If you are programming in Java or C#, the function signature isint is121Array(int[ ] a) If you are programming in C or C++, the function signature isint is121Array(int a[ ], int len) where len is the number of elements in the array a. Examples a is then function returns reason {1, 2, 1} 1 because the same number of 1s are at the beginning and end of the array and there is at least one 2 in between them. {1, 1, 2, 2, 2, 1, 1} 1 because the same number of 1s are at the beginning and end of…Write a java application which initializes an array with ten random integers between 1 and 6. Write two methods: 1. arraySwap: this method should accept an integer array and swap the first and the last item. 2. findMinimum: this method should accept the array and return the minimum value of that array You should comment and follow javaDoc for both methods. Your main method should test each of these methods./*In this program you need to implement four methods with the following signatures:printArr(int[] a)add(int[] a, int[] b)subtract(int[] a, int[] b)negate(int[] a) 1. Method printArr(a) should print out all elements of a given int array in one line. 2. Method add(a, b) should take two int arrays (assume they have the same length) and return a new array each element of which will be the sum of the corresponding elements in a and b 3. Method subtract(a, b) is similar to add(), except it returns (a - b) array 4. Method negate(a)takes an int array and returns a new array in which every element is multiplied by -1. */ public class ArrayOperations{ public static void main(String[] args){ //The main only has the testing code. //You don't have to change it. int [] a = { 1, 2, 3, 4, 5}; int [] b = {10, 1, 3, 5, 7}; System.out.print("a = "); printArr(a);//Should print each element of a (in one line) System.out.print("b = ");…
- Need help writing the following method: getRegisteredStudents() – returns an array of type Student[], namely the registered Students. The length of the array is the current size (number of students) of the course. public Student[] getRegisteredStudents() { // insert your solution here and modify the return statement return null; } FOR CONTEXT public class Course { public String code; public int capacity; public SLinkedList<Student>[] studentTable; public int size; public SLinkedList<Student> waitlist; public Course(String code) { this.code = code; this.studentTable = new SLinkedList[10]; this.size = 0; this.waitlist = new SLinkedList<Student>(); this.capacity = 10; } public Course(String code, int capacity) { this.code = code; this.studentTable = new SLinkedList[capacity]; this.size = 0; this.waitlist = new SLinkedList<>();…Write a method thattakes an integer array as its parameter and sorts the contents of the array inascending order using the Insertion Sort algorithm. Call this method after the original array (original program below) and other stats have been displayed. Once the array hasbeen sorted by your method, display its contents to the screen in the samemanner as the original array was displayed. import java.util.Random;import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner scnr = new Scanner(System.in); System.out.println("How many numbers to store?"); //input array size int size = scnr.nextInt(); //creating array double[] array = new double[size]; //fill array with random numbers in range 1-999 inclusive randomArray(array, size, 1, 999); //find smallest, largest and average compute(array, size); } //method to fill array with randoms numbers within range min to max and print them private static…Using Java Eclipse IDE (Average an array) Write two overloaded methods that return the average of an array with the following headers: public static int average(int [] array) public static double average(double [] array) Write a test program that prompts the user to enter 10 double values, invokes this method, then displays the average value.
- Please help me solve this with java 1-method called printArray that takes an array of double values and prints the arrayelements on the same line with one space between each two elements, then prints a new line.2. A method called getRandomElement that takes an array of double numbers and returns a random element from the array.3. A method called shiftArray that takes a double value and an array of double values. The method must shift the array in its place to the right, and insert the double value at index 0. Note that this method must not create a new array, it must rotate the array in its place.For example, if the passed array is 6.5, 2.1, 5.8, 1.5, 8.9 and the passed double value is 3.3, after invoking the method the array must become:3.3, 6.5, 2.1, 5.8, 1.54. A method called occurrences that takes a double value and an array of doubles as parameters, and returns the number of occurrences of the double value in the array.For example, if the double number 4.1 and the array {1.5,…Define an empty array with 4 elements in the Java "main" method. The value '-1' from the user to this arrayRecord the numbers entered by the user in order until they arrive. User array with 4 elementsAfter adding, write the required method so that it can continue adding elements. This method will take the array as a parameter, expand the size of the array and return the array variable.will return. Using this method you defined, the user can add elements to the array.make it continue.Write a class ArrayClass, where the main method asks the user to enter the four numbers. Create a method printArray that prints the array whenever required (use Array.toString method). Make the program run as shown in the Sample Run below. Use Array.sort, Arrach.bianrySearch, Array.equals Sample RunList1, Enter four numbers: 2 3 3 2List2, Enter four numbers: 6 2 5 4List3, Enter four numbers: 5 2 4 6Your original List1: [2, 3, 3, 2]Your original List2: [6, 2, 5, 4]Your original List3: [5, 2, 4, 6]Sorted List1 is: [2, 2, 3, 3]Enter a number from the sorted List1 to search for: 3Value 3 is in index 2 (or position 3)List that are the same when sorted: [2, 4, 5, 6
- (Java) Write a program that creates a 32-element array of random integers all from 1 to 100, inclusive. Then execute a custom method with the array as its only argument. The method should begin by using a loop to print the array elements in 4 rows and 8 columns, with all columns being five characters wide. Duplicates are okay. This same loop should determine how many integers in the array are odd numbers. After this loop ends, use this figure to declare a new array of integers named odds. Process the array again in the method, but this time with a foreach loop, and add the odd integers to the odds array. Return the odds array back to main. In main, report the size of the array and sort it ascending. Finally use a while loop to print the odd integers all on one line separated by spaces.Four integers are read from input and stored into the array arrayToModify. Write a static method resetFirstValue() that takes an integer array parameter and replaces the first element with 1. Ex: If the input is 55 45 70 65, then the output is: Original array: 55 45 70 65 Changed array: 1 45 70 65 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 Scannerscnr=newScanner(System.in); finalintNUM_ELEM=4; int[] arrayToModify=newint[NUM_ELEM]; inti; intuserNum; for (i=0; i<arrayToModify.length; ++i) { arrayToModify[i] =scnr.nextInt(); } System.out.print("Original array: "); printArr(arrayToModify); resetFirstValue(arrayToModify); System.out.print("Changed array: "); printArr(arrayToModify); } }Write the method public static int sumOfOdds(int [] myArray) that takes an integer array myArray. The method returns the sum of the odd integers in array myArray. For example, if myArray were the array below, the method would return the value 23, since the odd integers in myArray are 15, 7, and 1, and their sum is 23. myArray: 20 40 15 12 7 1 56 public static int sumOfOdds(int [] myArray) {...}
