Write a statie method called shorten that takes an ArrayList of Integers as a parameter. It should replace each sequence of two or more equal Integers in the ArrayList with a single Integer equal to the sum of the Integers that were equal. For example, suppose that the parameter is an ArrayList named a containing: [3, 7, 7, 7, з, 6, 6, 14] Then after calling shorten the ArrayList a should contain: [3, 21, 3, 12, 14] So the 3 occurrences of 7 were replaced with 21, and the 2 occurrences of 6 were replaced with 12. The two occurrences of 3 aren't changed, since they aren't next to each other.

Write a statie method called shorten that takes an ArrayList of Integers as a parameter. It should replace each sequence of two or more equal Integers in the ArrayList with a single Integer equal to the sum of the Integers that were equal. For example, suppose that the parameter is an ArrayList named a containing: [3, 7, 7, 7, з, 6, 6, 14] Then after calling shorten the ArrayList a should contain: [3, 21, 3, 12, 14] So the 3 occurrences of 7 were replaced with 21, and the 2 occurrences of 6 were replaced with 12. The two occurrences of 3 aren't changed, since they aren't next to each other.

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

See similar textbooks

Similar questions

Write a method that takes a two-dimensional array of type int and returns no value. The method replaces every positive element in the taken array with 0. Array before invoking the method Array after invoking the method 14 1 13 17 -5 5 -2 30 -63 -8 -10 78 4 0. -3 0 -5-5 0 -2 0 -6 3-8 0. -1 0 -4 0 10 5 10 -2-2 3 5 -7 8 0. 0 0 -2 -2 3 00 -7 0. -1 Paragraph B. 1. public static void handleTwoDArray(int[]0 in) (
CODE IN JAVA METHOD TO FIND PAIRS IN AN ARRAY LIST THAT CAN BE MULTIPLIED TOGETHER TO GET PARAMETER Complete the method findPairs which receives an array of integers and an intand returns an ArrayList of instances of Pair (this class is available in theQuestion.java file). You should search the array for any two ints whose product(i.e. when multiplied) is equal to the int parameter. When you find a pair, createan instance of Pair and add it to the ArrayList to be returned. The order of thevariables in the constructor is irrelevant. Do not modify the Pair class. Example 1:Array contains (1, 1, 1, 2, 2, 1, 1, 1)int parameter = 4The ArrayList should contain one instance of Pair with the values (2, 2). Example 2:Array contains (1, 2, 3, 4, 5, 6, 7, 8)int parameter = 12The ArrayList should contain two instances of Pair with the values (2, 6) and(3, 4) Example 3:Array contains (1, 1, 1, 1, 1, 1)int parameter = 3The ArrayList should be empty as there are no ways to compute the product of…
Write the following method that returns the sum of all numbersin an ArrayList:public static double sum(ArrayList<Double> list)Write a test program that prompts the user to enter five numbers, stores them inan array list, and displays their sum.
java Create a static method that: is called repeatAll returns ArrayList of Booleans takes in a single parameter - an ArrayList of Booleans This method should modify its ArrayList parameter by repeating its ArrayList values. For example, if the parameter is (true, false, false) The modified ArrayList should be (true, false, false, true, false, false) public static void main(String[] args) { Scanner in = new Scanner(System.in); int size = in.nextInt(); ArrayList<Boolean> list = new ArrayList<>(); for(int i=0; i < size; i++) { list.add(in.nextBoolean()); } System.out.println(repeatAll(list)); } }
java Create a method that: is called timesTwo returns an ArrayList of Integers takes in a single parameter - an ArrayList of Integers called nums This method should take the ArrayList parameter and multiply every value by two. public static void main(String[] args) { Scanner in = new Scanner(System.in); int size = in.nextInt(); ArrayList<Integer> list = new ArrayList<>(); for(int i=0; i < size; i++) { list.add(in.nextInt()); } System.out.println(timesTwo(list)); } }
Write a public static method named allLessThanMean that will take an ArrayList<Integer> as an argument. This method will return an ArrayList<Integer>. When called and passed anArrayList, this method will return an ArrayList containing all the elements in the argument ArrayList that are less than the average of all the values in the argument ArrayList. The values in the returned ArrayList must be in the same order as they are in the argument ArrayList. Here are some examples: Example 1 Given: ArrayList<Integer> myList = new ArrayList<Integer>(); with these values {1, 2, 3, 4, 5}; allLessThanMean(myList) should return an ArrayList<Integer> with these values {1, 2} Example 2 Given: ArrayList<Integer> myList = new ArrayList<Integer>(); with these values {3, 7, 6, 2, 9, 0, 4, 8}; allLessThanMean(myList) should return an ArrayList<Integer> with these values {3, 2, 0, 4} Example 3 Given: ArrayList<Integer> myList = new…
Write a method called manipulate-2-Dim that receives a two-dim array of integer numbers called a matrix. The method should return the sum of elements in the even rows of the array.
Write a void method selectionSortDescendTrace() that takes an integer array, and sorts the array into descending order. The method should use nested loops and output the array after each iteration of the outer loop, thus outputting the array N-1 times (where N is the size). Complete main() to read in a list of up to 10 positive integers (ending in -1) and then call the selectionSortDescendTrace() method. If the input is: 20 10 30 40 -1 then the output is: 40 10 30 20 40 30 10 20 40 30 20 10
Use the ArrayList class Add and remove objects from an ArrayList Protect from index errors when removing Practice with input loop Details: This homework is for you to get practice adding and removing objects from an ArrayList. The Voter class was used to create instances of Voters which held their name and a voter identification number as instance variables, and the number of instances created as a static variable. This was the class diagram: The constructor takes a string, passed to the parameter n, which is the name of the voter and which should be assigned to the name instance variable. Every time a new voter is created, the static variable nVoters should be incremented. Also, every time a new voter is created, a new voterID should be constructed by concatenating the string “HI” with the value of nVoters and the length of the name. For example, if the second voter is named “Clark Kent”, then the voterID should be “HI210” because 2 is the value of nVoters and 10 is the number…
The input to this method is supposedly an ArrayList of integers that ranges from 1 to 100, however this is not exactly the case. Sometimes, there will be gaps in the range for example, the range could be: [1 2 ... 7 8 ... 99 100], with missing ranges in between. Find all the missing numbers from the range, add them to an ArrayList, return the ArrayList.------------------------ Below is my code that is failing. It is returning the correct missing numbers but is not going passed the last number from the array. so [4,5,14,16,23,76,89] It is placing all of the missing numbers up to 88 when it should be going to 100 ------------------------ public ArrayList<Integer> solution(ArrayList<Integer> nums) {ArrayList<Integer> result = new ArrayList<Integer>();int count = 0;for(int i = 0;i<nums.size()-1;i++){for(int j = nums.get(i)+1;j<nums.get(i+1);j++){count++;result.add(j);}}return result;}
Write a method swapArrayEnds() that swaps the first and last elements of its array parameter. Ex: sortArray = {10, 20, 30, 40} becomes {40, 20, 30, 10}. The array's size may differ from 4. new code can only be added between existing code. as seen in image.
Write a static method that displays all combinations of picking two numbers from the array list: public static void combinations(ArrayList<Integer> list) Include the driver program that prompts the user to enter 10 integers and displays all combinations of picking two numbers from the array list.