Author Archives: Mr. M

CMU Unit 3 Creative Task

Requirements

1 mouse function
1 “helperf” function
at least 15 total lines of code

Unit 2 Extra Credit

In addition to the required Unit 2 Creative Task, if you want some extra credit, you can do the following assignment:

Research how groups work in CMU ( see the docs)

Write a program that

includes two functions
minimum of 5 objects
A group comprised of at least 3 objects
One of the functions must change the properties of all things in the group.

You can write this in one of empty creative a tasks.

CMU Unit 2, creative task – mousepress mousedown

For this creative task,

minimum of 2 shapes
minimum of 2 functions
- 1 must be a mouse function (mousePress, mouseMove, mouseRelease)
- the other function can be any function at all
- one of the functions must change a property (fill, width etc) of the shape

After you are done this, maybe you want to try this.

Bs4 template

<!doctype html>
<html lang="en">
  <head>
    <!-- Required meta tags -->
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">

    <!-- Bootstrap CSS -->
    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@4.0.0/dist/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
 <!-- jQuery --> 
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.6.0/jquery.min.js" crossorigin="anonymous"></script> 

    <title>Hello, world!</title>
  </head>
  <body>
    <h1>Hello, world!</h1>

    <!-- Optional JavaScript -->
      <script src="https://cdn.jsdelivr.net/npm/popper.js@1.12.9/dist/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
    <script src="https://cdn.jsdelivr.net/npm/bootstrap@4.0.0/dist/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>
  </body>
</html>

<!doctype html>

<head>

<title>Hello, world!</title>

</head>

<body>

<h1>Hello, world!</h1>

</body>

</html>

SUPA – Web 2022-23

Prior iterations : https://mrmonline.org/supa-2020/ , https://mrmonline.org/web-design-programming-18-19/

Templates

https://mrmonline.org/templates-for-web-design/

Bootstrap

https://getbootstrap.com/docs/4.5/ — Official Bootstrap 4 website
Bootstrap 4 Cheat Sheet
Bootstrap presentations
Bootstrap 4 @ www schools
Other good links for bs4 topics
- Centering Content
- bs4 Utilities (nice summary by w3schools)
- Bootstrap grid

Vim

Mazes – Starting out

Getting Starting with Solving Mazes

Soon we will be doing more challenging Mazes here : https://mrmonline.org/maze-activities-1/

The Economy

Create Your Own Jeroo Maze and solution

Create a maze along the lines here https://mrmonline.org/maze-activities-1/ , https://mrmonline.org/mazes-3/

Your maze should be able to be solved by 1 loop. You are allowed to add a few lines after the loop to “clean up” the solution if you want but the bulk of the maze should be solvable using a single while loop.

Submit both the map and your solution.

2-d Arrays OOP Project

Let’s write a program for something like PowerSchool that helps organize a seating chart for students. There is a tester file at the page’s bottom.

First class : Student , from https://mrmonline.org/student-class/

Class SeatingChart

This class mainly manages a 2-d array of student objects. Note: an empty seat in the chart will be designated by a null value.

private Student[][] chart ; // rows and columns for where kids are
private String rosterName; //name of this roster
private String teacherName; 
private int period ; //which period is this chart associated 
public static final int DEFAULT_ROWS = 10;
public static final int DEFAULT_COLS = 10;

private Student[][] chart ; // rows and columns for where kids are

private String rosterName; //name of this roster

private String teacherName;

private int period ; //which period is this chart associated

public static final int DEFAULT_ROWS = 10;

public static final int DEFAULT_COLS = 10;

Constructor(s)

public SeatingChart(int period, String teacher, String _rosterName) Initializes parameters to respective arguments and creates a 2-d array of null objects with default dimensions DEFAULT_ROWS , DEFAULT_COLS
public SeatingChart(int period, String teacher, String _rosterName, Student[][] table)

Methods:

public int countEmptySeats() ; //returns the number of empty seats. As noted earlier, an empty seat is represented by a null value in the 2-d array of student s

Student[][] getStudentChart() @returns chart

public int[] indexOf(Student stu); returns a 2 element array representing the row and column position of stu in chart ; [-1][-1] should be returned if stu is not in chart

public boolean setSeat(int row, int col, Student stu) - places Student Stu at that row and column . This can only be done if there is no student in that location. If a student already inhabits that row and column then the method should return false and not make any changes to chart .

public void swap(Student s1, Student s2) // this swaps the locations of s1 and s2

public Student getStudent(int row, int col) returns the student at the given row and col ; or null if the seat is empty

public void removeStudentAt(int row, int col) sets value of object at row and col to null

public boolean equals(SeatingChart other) // returns true if all aspects of other are equivalent to self.

public String toString(); //follow the conventions we have been using

public Student oldest() // returns the student object with the greatest age

Extra credit

public void randomize() // this randomizes the chart. This extra credit method is only available if you first meet with me to explain what I expect out of this.

SeatingChartTesterv2.java :

import java.util.Arrays;

public class SeatingChartTesterv2
{
    public SeatingChartTesterv2()
    {
    Student amelia = new Student("Amelia", 17);
    Student antonioooo = new Student("antonioooo", 14);

    SeatingChart period3 = new SeatingChart(3, "Mr. M", "A Days");

    int correct = 0;
    int wrong  = 0;

    Student[][] currentChart = period3.getStudentChart();
    if(currentChart[0].length == SeatingChart.DEFAULT_COLS && currentChart.length == SeatingChart.DEFAULT_ROWS)
        correct++;
    else
        {
        p("Default constructor's 2-d Array incorrect dimensions");
        wrong++;
        }

    boolean result = period3.setSeat(5,6, amelia );

    if(result)
        correct++;
    else
        {
        p("setSeat() return value error");
        }

    Student[][] chartNow = period3.getStudentChart();
    if(chartNow[5][6] == amelia)
    {
        correct++;

// Student getStudent(int row, int col)
        if( period3.getStudent(5,6) == amelia)
            correct++;
        else
            {
            p("Error, looks like getStudent() ");
            }

    }    
    else
        {
        p("A) erorr, probably from setSeat() or getStudentChart() ");
        wrong++;
        }



    int[] locaxn = period3.indexOf(amelia);
    if(locaxn[0]==5 && locaxn[1] == 6)
        correct++;
    else
        {
        p("B) setSeat() or indexOf() error");
        wrong++;
        }
    result =period3.setSeat(5,6, antonioooo );

    if(result== false)
        correct++;
    else
        {
        p("C) setSeat() return value error");
        wrong++;
        }

    String st = period3.toString();

    if(st.indexOf("SeatingChart") == 0)
        correct++;
    else{
        p("toString() error. ClassName should be first characters");
        wrong++;
    }

    if(st.contains("Mr. M"))
        correct++;
    else{
        p("toString() error. ");
        wrong++;
    }
   
    if(st.contains("A Days"))
        correct++;
    else{
        p("toString() error. ");
        wrong++;
    }
//new seating chart
Student tim = new Student("tim");
Student[][]  someKids= {
                    { new Student(), tim , null},
                    { new Student(), new Student("joe", 12), null, null,null},
                    { new Student(), new Student("alfjdj", 999), null},
                    { new Student(), new Student("sss", 5), null},
                        };

    SeatingChart period4 = new  SeatingChart(4, "MR M", "p4", someKids);

//make sure that someKids was actually set to the chart

Student[][] p4Chart = period4.getStudentChart();
if( Arrays.equals(p4Chart , someKids))
    correct++;
else
    {
    wrong++;
    p("Error . Looks like you did not correctly instantiate 2-d array in constructor ");
    }




    boolean isCorrect = true;
Student oldest  = null ;
    try{
    oldest = period4.oldest();
    }
    catch(NullPointerException e){
        isCorrect = false;    
            p("Error @ oldest(), you cannot call .getAge() on a null object");
        }
   
if(isCorrect && oldest != null && oldest.getAge() ==999)
correct++;
else
    {
    wrong++;
    p("Error @ oldest()");
    }
    locaxn = period4.indexOf(tim);
  
    
    System.out.print(locaxn[0]);
    System.out.print(locaxn[1]);


    if(locaxn[0]==0 && locaxn[1] == 1)
        correct++;
    else
        {
        p("A incorrect student. Could be constructor");
        wrong++;
        }
       
if ( period4.getStudent(0,1) == tim )
        correct++;
    else
        {
        p("B incorrect student. Could be constructor, getStudent()");
        wrong++;
        }
    ///


int emptySeats = period4.countEmptySeats();

if(emptySeats == 6)
        correct++;
    else
        {
        p("countEmptySeats() error");
        wrong++;
        }


Student vinnie = new Student("Vinnie", 16);
Student yuya = new Student("Yuya", 18);
Student[][]  p5Kids = {
                        { yuya, vinnie}
                        };

SeatingChart period5 = new  SeatingChart(4, "MR M", "p4", p5Kids);

int[]  yuyaLocation_befo = period5.indexOf(yuya);
int[]  vinniaLocation_befor = period5.indexOf(vinnie);



period5.swap(vinnie,yuya) ;
int[]  yuyaLocation_now = period5.indexOf(yuya);
int[]  vinniaLocation_now = period5.indexOf(vinnie);

if( yuyaLocation_now[0] == vinniaLocation_befor[0] &&  yuyaLocation_now[1] == vinniaLocation_befor[1]  )
        correct++;
    else
        {
        p("Error Swap");
        wrong++;
        }
if( vinniaLocation_now[0] == yuyaLocation_befo[0] &&  vinniaLocation_now[1] == yuyaLocation_befo[1]  )
        correct++;
    else
        {
        p("Error Swap");
        wrong++;
        }
////
//


Student rany = new Student("rany", 16);
Student[][]  p6Kids = {
                        { rany, null,null,null},
                        { null, null,null,null}
                        };

SeatingChart period6 = new  SeatingChart(4, "MR M", "p4", p6Kids );
period6.removeStudentAt(0,0);
if( period6.getStudent(0,0) == null )
        correct++;
    else
        {
        p("Error @ removeStudentAt() ");
        wrong++;
        }

if( period5.equals(period6) == false)
        correct++;
    else
        {
        p("A Error @ equals() ");
        wrong++;
        }
if( period5.equals(period5) )
        correct++;
    else
        {
        p("B Error @ equals() ");
        wrong++;
        }

SeatingChart period6Clone = new  SeatingChart(4, "MR M", "p4", p6Kids );

if( period6.equals(period6Clone) )
        correct++;
    else
        {
        p("C Error @ equals() ");
        wrong++;
        }




p("----------------------------------");
p("Correct : " + correct);
p("Wrong : " + wrong);


    }//end of constructor

void p(String x) { System.out.println(x); }
void p(int x) { System.out.println(x); }
void p(boolean x) { System.out.println(x); }
void p(double x) { System.out.println(x); }
void p2d(int[] x) { System.out.println(x[0] + ",  " + x[1]); }

}

SeatingChartTester