How do you call the _ _str_ _ method?

What performance advantages do vectors provide over arrays?

Use java  See the image for requirements

Attributes item_name (string) item_price (int) item_quantity (int) Default constructor Initializes item's name="none", item's price = 0, item's quantity=0 Method print_item_cost() Ex of print_item_cost() output: Bottled Water 10 @ $1 = $10 in the main section of your code, prompt the user for two items and create two objects of the ItemToPurchase class. Exc Item 1 Enter the item name: Chocolate Chips Enter the item price: 3 Enter the item quantity: 1 Item 2 Enter the item name: Bottled Water Enter the item price: 1 Enter the item quantity: 10 Add the costs of the two items together and output the total cost Ex TOTAL COST Chocolate Chips 1 @ $3-$3 Bottled Water 10 @ $1= $10 Total: $13

C#  i need to Write a program named SortWords that includes a method named SortAndDisplayWords that accepts any number of words, sorts them in alphabetical order, and displays the sorted words separated by spaces. Write a Main() to test this function. The SortAndDisplayWords method will be tested with one, two, five, and ten words. Method SortAndDisplayWords sorts and displays one word Method SortAndDisplayWords sorts and displays two words Method SortAndDisplayWords sorts and displays ten   wordsMethod SortAndDisplayWords sorts and displays five words   using System; using static System.Console; public class SortWords {    public static void Main()    {       // Write your main here    }         public static void SortAndDisplayWords(params string[] words)    {    } }

IN C# PLEASE Create class Cube. The class has attributes length and width and depth, each of which defaults to 1. It has read-only properties that calculate the Perimeter and the Area for a side of the cube, and another that calculates the cubed feet for the cube. (You will have to research how to do that calculation online) It has properties for length and width and depth. The set accessors should verify that length and width and depth are all floating-point numbers greater than 0.0 and less than 20.0. Write an app to test class Cube by creating 3 cubes of different sizes.

text file 80 1 2 3 100 100 100 1001 0 2 100 3 4 100 1002 2 0 4 4 100 5 1003 100 4 0 100 100 4 100100 3 4 100 0 3 3 3100 4 100 100 3 0 100 1100 100 5 4 3 100 0 2100 100 100 100 3 1 2 0 My code below. I am getting an error when trying to create my adjacency matrix. i dont know what i am doing wrong def readMatrix(inputfilename):    ''' Returns a two-dimentional array created from the data in the given file.            Pre:  'inputfilename' is the name of a text file whose first row contains the            number of vertices in a graph and whose subsequent rows contain the rows of            the adjacency matrix of the graph. '''        # Open the file    f = open(inputfilename, 'r')     # Read the number of vertices from the first line of the file    n = int(f.readline().strip())     # Read the rest of the file stripping off the newline characters and splitting it into    # a list of intger values    rest = f.read().strip().split()         # Create the adjacency matrix    adjMat = []…

The xxx_Student class:– Name - the name consists of the First and Last name separated by a space.– Student Id – a whole number automatically assigned in the student class– Student id numbers start at 100. The numbers are assigned using a static variable in the Student class• Include all instance variables• Getters and setters for instance variables• A static variable used to assign the student id starting at 100• A toString method which returns a String containing the student name and id in the format below:Student: John Jones ID: 101 The xxx_Course classA Course has the following information (modify your Course class):– A name– An Array of Students which contains an entry for each Student enrolled in the course (allow for up to 10 students)– An integer variable which indicates the number of students currently enrolled in the course. Write the constructor below which does the following:Course (String name)Sets courseName to nameCreates the students array of size 10Sets number of…

Assign numMatches with the number of elements in userValues that equal matchValue. userValues has NUM_VALS elements. Ex: If userValues is {2, 1, 2, 2} and matchValue is 2, then numMatches should be 3. Your code will be tested with the following values: matchValue: 2, userValues: {2, 1, 2, 2} (as in the example program above) matchValue: 0, userValues: {0, 0, 0, 0} matchValue: 10, userValues: {20, 50, 70, 100} (Notes) 324758.2040686.qx3zgy7 3 int main(void) { const int NUM VALS = 4; int userValues[NUM_VALS]; int i; int matchvalue; int numMatches = -99; // Assign numMatches with e before your for loop 4 1 test 5 passed 6 7 All tests 8 passed 9 scanf ("%d", &matchValue); 10 11 for (i = 0; i < NUM_VALS; ++i) { scanf("%d", &(userValues[i])); } 12 13 14 15 16 * Your solution goes here */ 17 18 printf("matchvalue: %d, numMatches: %d\n", matchValue, numMatches); 19 20 return 0;

Please complete this program in C++ Please enusre that there is plenty of comments. PLENTY even if unessessary. Please include screenshots of actual code, screenshots of output, and code in the browser so I can copy and paste. Thank you.