khangaikhuu / cs_introduction

computer science introduction in Java using BlueJ

Hi 👋, I'm Uvgunkhuu Khangaikhuu

A passionate Fullstack developer from Ulaanbaatar Mongolia 🇲🇳

• 📚 I am currently working at iCode Academy

• 🌱 I am currently in the race Software Design and Development

• 🏙 Creator of the M24.mn organization

• 🏙 Creator of the icode.mn organization

• 📫 How to reach me [email protected]

Connect with me:

Languages and Tools:

---

Credit: Anderson Mendoza

cs_introduction's Issues

Palindrome

Using a Java program, we can check if a word is a palindrome. We can at least use two methods to reverse a particular word or string in Java. One method is using Java loop to reverse the word.

Write a program, which adds all elements of given two arrays. this sum should be printed out.

Write a class, with private fields. one has type of boolean and one has type of double. Write 2 methods, which return those 2 fields.

Swap two numbers

In this program, you'll learn two techniques to swap two numbers in Java. The first one uses a temporary variable for swapping, while the second one doesn't use any temporary variables.

Write a greenfoot program, which has a basketball field. There is ball also. If you let the program run, then the ball should move position (200, 300) -> (230, 400) -> (240, 300)

Write a Java program, which calculates the maximum of given these 3 numbers : 10, 5, 18

Open Greenfoot and create a World with desert with size 800 and 600. There is one Scorpion at position 300 and 400.

First Draft Code

First Logic should be implemented in Java

Write a program in Java with following requrement.

1. A castle world
2. a canon actor.
3. this canon can be rotated, when key up or down is clicked.

Write a greenfoot program. It has a bear world. There is one brown bear. after we click start, then the bear should move from position 300, 400 -> 320, 400 -> 350, 400 -> 400, 400 -> 450 , 400

Write a java program to check palindrome number.

Input: 329

Output: not palindrome number

Input: 12321

Output: palindrome number

Create a world with Name MyMedicalCenter. This center has a background a Hospital and size of 600, 600. There is an Actor Doctor at position 300, 300.

Open GreenFoot and create a world with Jungle with size of 800 , 600. Place a monkey as an Actor in the jungle at position 200, 400.

Write a java program to check prime number.

Input: 44

Output: not prime number

Input: 7

Output: prime number

Create Snake game

Create a world with Walls. the size should be 600, 600. There is a snake on the wall at position 300, 300.

Write a program, which calculates all elements of given array. {5, 4, 22, 34, 12}

Write a program, which calculates the size of an array and prints it out. int[] arr = {1, 3, 4, 5, 6, 7}

Create a World with Ocean and create a Shark on it. The world should have size of 700, 400 and shark should be positioned at 300, 200.

Write a program, which multiplies and returns multiplication of all elements of given array {1, 3, 4,5 , 10, 15, 18}.

Write a java program to print factorial of a number.

Input: 5

Output: 120

Input: 6

Output: 720

Write a program, which finds out, whether the given number is even or odd.

Write a method, which returns sum of those numbers. 4, 5, 10, 40.

Write a class with name MyClassTwo. This class should have a method, which prints out "I'm Anand" on the console.

Write a class with name MyClass. This class has 2 private fields with type of BOOLEAN and INTEGER.

Print all elements in this Array : int array = {1, 2, 3, 4};

write a method with prints out the sum of 4, 5 , 6.

You have to write it on BlueJ

Create a world with name MyWorld. This world has a black picture behind it. The size of this world is 600, 600. There is a sun at position 300, 300.

Even or Odd

check if a number entered by an user is even or odd. This will be done using if...else statement and ternary operator in Java.

Write a program which prints out, "Hello My Name is Namuun and I like programming".

Write a class with name MyAge. This class includes a private field with your age. It has a method, which returns your age.

Write a program which prints out all odd number for given array. {1, 2, 3, 4, 5,6 ,7 , 8, 9, 10}

write a greenfoot program, which has a flesh fabrik as world. This world should have a cow. This cow should be positioned at (300, 400)

Find Quotient and Remainder.

compute quotient and remainder from the given dividend and divisor

Quotient = 6
Remainder = 1

Write a Java program, which finds out minimum of those 3 numbers : -1, 10, 4

Write a program, which checks, whether the number is even or odd. If it's odd then print out. "It's odd". Otherwise print out "It's even"

Create a world with Mongolian Desert. The size is 500, 600. There is one camel and it is at position 300, 400.

Write a program, which prints out all the elements of an array. {3, 4, 5, 6, 7, 8}

Write a program, which prints out the sum of all elements of an array.

Write a class with private field myArray with values {1, 2, 3, 4}. This class should have a method, which returns size of this array.

Write a program, which finds a maximum of element for given array {3, 4, 5, 6, 1, 15, 7, 3, 23}

There is an array with values {1, 3, 4, 5}. Write a method, which returns sum of all the elements.

Write a method, which multiplies those numbers and prints it out. 10, 20, 4. Use BlueJ

GUI Design

Calculator Design should be done here.
The button , window, number styles should be provided.

Write a program, which calculates subtraction of given 4 numbers.

Write a program in Greenfoot, which has Factory as world. This world should have 2 robots at position (300, 400) and (500, 400)

Create a world with name BasketBallCompetition in GreenFoot with size of 600, 600. There is a Basketball Actor with name LebronJames. This player stands at position 300, 300.

Write a class with Name HelloWorld.

In this class create a method printHelloWorld, which prints out "Hello World!".

There is an array with values {1, 2, 3, 4}. Print out all the array values in a method.

Write a greenfoot program, which has Ambulance as a World. This world has a patient at position (300, 400) and a medical transport car at position (500, 400)