Question

Visual C#

Homework 2

You are to write a program which will create a class called Student

Each student has a name age height and weight. These variables should be declared as private.

Create the correct constructors and functions.

In the main, you will create 5 students.

Input the data for the 5 students from a file which already has information in it. Name the file “Information.txt”.

After setting up all the data, it is time to sort based on the user input.

1 to sort by name

2 to sort by age

3 to sort by height

4 to sort by weight

(Create a function for each one).

You should use Bubble sort only.

Any other sort or array will be a zero.

Homework 2 You are to write a program which will create a class called Student. (This is the last assignment from 3310) Each student has a name, age, height and weight. These variables should be declared as private. Create the correct constructors accessors and functions in the main, you will create 5 students. Input the data for the 5 students from a file which already has information in it. Name the File "information.xt After setting up all the data, a is time to sort based on the user input. 1 to sort by name. 2 to sort by age. 3 to sort by height and 4 to sort by weight. (create a function for each one You should use Bubble Sort. Use of Array.Sort or any other sort will result in a zero Do not use Bubbleish sort like it has in the review file. Display the data neatly on the screen. Turn in the project zipped.

Answer 1

//java code
import org.codehaus.jackson.map.ObjectMapper;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.util.ArrayList;
import java.util.Comparator;
import java.util.HashMap;

public class Student implements  {
    private String name;
    private int age;
    private float height;
    private float weight;

    public Student() {
    }

    public Student(String name, int age, float height, float weight) {
        this.name = name;
        this.age = age;
        this.height = height;
        this.weight = weight;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public float getHeight() {
        return height;
    }

    public void setHeight(float height) {
        this.height = height;
    }

    public float getWeight() {
        return weight;
    }

    public void setWeight(float weight) {
        this.weight = weight;
    }

    public static void main(String args[]) throws Exception {
        //creating a list of objects

        File file = new File("<pathToFile>/information.txt");
        BufferedReader br = new BufferedReader(new FileReader(file));
        String st;
        int i=0;
        HashMap <String, Object> temp = new HashMap<>();
        ArrayList<HashMap<String, Object> > h = new ArrayList<>();
        while ((st = br.readLine()) != null) {
            temp.clear();
            String[] split = st.split(" ");
            String name  = (split[0]);
            int age = Integer.parseInt(split[1]);
            float height = Float.parseFloat(split[2]);
            float weight = Float.parseFloat(split[3]);
            //System.out.println(st);
            Student s= new Student();
            s.setAge(age);
            s.setHeight(height);
            s.setName(name);
            s.setWeight(weight);
            temp.put("age", s.getAge());
            temp.put("height", s.getHeight());
            temp.put("name", s.getName());
            temp.put("weight", s.getWeight());
        }

        if(i<5){
            h.set(i, temp );
            i++;
        }

        //sorting to be done
        ArrayList<HashMap<String, Object>> sorted_list = new ArrayList<>();
        sorted_list = sort("age");
        sorted_list = sort("name");
        sorted_list = sort("height");
        sorted_list = sort("weight");

    }

    public ArrayList<HashMap<String, Object>> sort (String sortBy){
        ArrayList<HashMap<String, Object>> h = new ArrayList<>();
        HashMap<String, Object> temporary;
    for (int c = 0; c < (h.size() - 1); c++) {
        for (int d = 0; d < (h.size() - c - 1); d++) {

            if ((h.get(d).get(sortBy)).compareTo((h.get(d + 1).get(sortBy)))>0 ) {

                temporary = h.get(d);
                h.set(d, h.get(d + 1));
                h.set(d + 1, temporary);

            }
        }
    }
    return h;
    }
}

//information.txt file

john, 23, 6.3, 70
mona, 22, 5.8, 55
lisa, 30, 4.9, 44
joey, 33, 5.8, 60
ram, 21, 6, 77