Filesystem Reformatting Changes (Reviewed)

Author: Anksharskarp

AP-Computer-Science-A-Prep-Code/README.md

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+[![forthebadge](https://forthebadge.com/images/badges/made-with-java.svg)](https://forthebadge.com)
+
+## Introduction
+
+Welcome to my code snippets and samples from the EasyFunCoding Advanced I class! 
+These files were created from 2020 to 2021, and are continued to be maintained. 
+Feel free to contact me via GitHub if you have any suggestions. 
+
+## Folder Structure
+
+The workspace contains two folders by default, where:
+
+- `src`: the folder to maintain sources
+- `lib`: the folder to maintain dependencies
+
+## Dependency Management
+
+The `JAVA DEPENDENCIES` view allows you to manage your dependencies. More details can be 
+found [here](https://github.com/microsoft/vscode-java-pack/blob/master/release-notes/v0.9.0.md#work-with-jar-files-directly).
+
+## Troubleshooting (Visual Studio Code)
+
+If you encounter a `Failed to Load Main Class` or `Main Class Not Found` error,
+simply restart the Java Language Workspace by pressing `Cmd`+`Shift`+`P` and 
+selecting `Restart and Delete Java Language Workspace.` 
+Otherwise, try updating the Project Manager for Java in Visual Studio Code. 
+
+**Note: Once you rebuild the project, make sure you add in the `package` keyword, 
+which has important information about the folder in which the `.java` code file resides.
+
+## Troubleshooting (IntelliJ IDEA)
+
+In the event of any issues, the tried and true method is going to the `File` 
+dropdown menu, selecting `Invalidate Caches / Restart`
+and wait for the IDE to reboot and add the `.idea` settings folder to the project 
+(a common issues across different platforms).
+
+## Completed Homework Assignments:
+
+- Class #1 to Class #16
+- Class #27 (Submitted)
+- Class #28 (Submitted)
+- Class #29 (Submitted)
+- Class #30 (Submitted)
+- Class #31 (Submitted)
+- Class #32 (Submitted)
+- Class #33 (Submitted)
+- Class #34 (Finished)

AP-Computer-Science-A-Prep-Code/src/JavaClass1/Class1Part1.java

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+package JavaClass1;
+
+import java.util.Date;
+
+class Class1Part1 {
+ public static void main(String[] args) {
+ Date d = new Date();
+ System.out.println(d);
+ }
+}
+
+// This is how you comment out Java code

AP-Computer-Science-A-Prep-Code/src/JavaClass1/Class1Part2.java

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+package JavaClass1;
+
+//import java.util.Date;
+public class Class1Part2 {
+ public static void main(String[] args) {
+ int rows = 10;
+ for(int i = 1; i <= rows; i++) {
+ for(int j = 1; j <= i; j++) {
+ System.out.print(i + "");
+ }
+ System.out.println();
+ }
+ }
+}

AP-Computer-Science-A-Prep-Code/src/JavaClass1/Class1Part3.java

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+package JavaClass1;
+
+public class Class1Part3 {
+ public static void main(final String[] args)
+ {
+ System.out.println(3 + 2);
+ System.out.println(3 - 2);
+ System.out.println(3 * 2);
+ System.out.println(3 / 2); // Only returns the int part...
+ System.out.println( 3.0/2 );
+System.out.println( 3%2 );
+System.out.println( 3 == 2 );
+ System.out.println( 3 != 2 );
+ 
+ }
+}

AP-Computer-Science-A-Prep-Code/src/JavaClass1/Class1Part4.java

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+package JavaClass1;
+
+import java.util.Scanner;
+
+class Class1Part4 {
+ public static void main(final String[] args) {
+ 
+ Scanner s = new Scanner(System.in);
+ System.out.println("Please enter the height of the pyramid: ");
+ int height = s.nextInt();
+ s.close();
+
+ for (int i = 0; i < height; i++){
+ for (int j = 0; j < height -i; j++)
+ System.out.print(" ");
+ for (int j = 0; j < i; j++)
+ System.out.print("**");
+ System.out.println();
+ }
+ }
+} 

AP-Computer-Science-A-Prep-Code/src/JavaClass1/Class1Part5.java

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+package JavaClass1;
+
+public class Class1Part5 {
+ public static void main(String[] args) {
+ for (int i = 0; i <= 100; i = i + 2)
+ System.out.println(i);
+ }
+}

AP-Computer-Science-A-Prep-Code/src/JavaClass1/HelloWorld.java

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+package JavaClass1;
+
+class Class1Start {
+ public static void main(String[] args) {
+ for ( int i = 0; i<10; i++)
+ System.out.println("Hello world! "+i);
+ }
+ }

AP-Computer-Science-A-Prep-Code/src/JavaClass1/Homework1Part1.java

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+package JavaClass1;
+
+import java.util.Scanner;
+public class Homework1Part1 
+{
+ public static void main(String[] args) 
+ {
+ int n;
+ Scanner s = new Scanner(System.in);
+ System.out.print("Enter the number you want to check:");
+ n = s.nextInt();
+ s.close();
+ if(n % 2 == 0)
+ {
+ System.out.println("The entered number "+n+" is even ");
+ }
+ else
+ {
+ System.out.println("The entered number "+n+" is odd ");
+}
+ }
+}

AP-Computer-Science-A-Prep-Code/src/JavaClass1/Homework1Part2.java

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+package JavaClass1;
+
+import java.util.Scanner;
+public class Homework1Part2 
+{
+ public static void main(String[] args) 
+ {
+ int num;
+ Scanner s = new Scanner(System.in);
+ System.out.print("Enter the number you want to check:");
+ num = s.nextInt();
+ s.close();
+ boolean flag = false;
+ for (int i = 2; i <= num / 2; ++i)
+ {
+ //Conditions for nonprime number
+ if(num % i == 0)
+ {
+ flag = true;
+ break;
+ }
+ }
+
+ if (!flag)
+ System.out.println(num + " is a prime number.");
+ else
+ System.out.println(num + " is not a prime number.");
+
+ }
+
+}

AP-Computer-Science-A-Prep-Code/src/JavaClass10/Class10Part1.java

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+package JavaClass10;
+
+import java.util.ArrayList;
+
+public class Class10Part1 {
+ public static void main(String[] args) {
+ ArrayList<Integer> list = new ArrayList<Integer>();
+ for (int i = 1; i <= 10; i++) {
+ list.add(10 * i);
+ }
+ //list: [10, 20, 30, ..., 100]
+ for (int i = 0; i < list.size(); i++) {
+ list.remove(i);
+ }
+ /* 
+ 1st pass: [20, 30, 40, ..., 100] removed 0
+ 2nd pass: [20, 40, 50, ..., 100] removed 1
+ 3rd pass: [20, 40, 60, 70, ..., 100] removed 2
+ 4th pass: [20, 40, 60, 80, 90, 100] removed 3
+ 5th pass: [20, 40, 60, 80, 100] removed 4
+ Exits loop because we are at the end of the list
+ */
+ System.out.println(list);
+
+ ArrayList<Integer> list1 = new ArrayList<Integer>();
+ for (int i = 1; i <= 5; i++) {
+ list1.add(2 * i);
+ }
+ //list: [2, 4, 6, 8, 10]
+ int size = list.size();
+ for (int i = 0; i < size; i++) {
+ list1.add(i, 42);
+ }
+ // list: [42, 42, 42, 42, 42, 2, 4, 6, 8, 10]
+ System.out.println(list1);
+
+ for (int k = 0; k < 20; k = k + 2) {
+ if (k % 3 == 1) {
+ System.out.print(k + " ");
+ }
+ }
+ // Prints: 4 10 16
+ }
+}