Migrate development environment from Windows to macOS and continue project updates

- Shifted primary development environment from Windows to macOS to ensure better performance, stability, and streamlined workflow for Java development.
- Removed OS-specific metadata and ensured platform-agnostic project compatibility.
- Normalized line endings to LF for cross-platform consistency.
- Verified and adjusted file paths, permissions, and encoding settings to suit macOS environment.
- Cleaned up unnecessary Windows-generated files and updated Git configuration accordingly.
- Future commits and development will now be
managed entirely from macOS.

This migration ensures a cleaner, more consistent
setup moving forward and prepares the project for
scalable development across Unix-based systems.

Future development will continue on macOS for a
smoother, Unix-based experience.

Signed-off-by: Someshdiwan <[email protected]>

Author: Someshdiwan

Section9ArrayAB/Array 2.0/Array 2.0.iml

@@ -7,14 +7,5 @@
     </content>
     <orderEntry type="inheritedJdk" />
     <orderEntry type="sourceFolder" forTests="false" />
-    <orderEntry type="module-library" exported="">
-      <library>
-        <CLASSES>
-          <root url="jar://$MODULE_DIR$/../../../../sqlite-jdbc-3.34.0.jar!/" />
-        </CLASSES>
-        <JAVADOC />
-        <SOURCES />
-      </library>
-    </orderEntry>
   </component>
 </module>

Section9ArrayAB/Array 2.0/src/Arrays.java

@@ -0,0 +1,26 @@
+public class Arrays
+{
+    public static void main(String[] args)
+    {
+        //week days
+        String[] weekDays = new String[7];
+        weekDays[0] = "Monday ";
+        weekDays[1] = "Tuesday ";
+        weekDays[2] = "Wednesday ";
+        weekDays[3] = "Thursday ";
+        weekDays[4] = "Friday ";
+        weekDays[5] = "Saturday ";
+        weekDays[6] = "Sunday ";
+
+        //prime numbers
+        int[] primes = {2, 3, 5, 7, 11, 13, 17};
+
+        //the way to print an array in Java is to loop through it
+        for (int i=0; i<7; i++)
+        {
+            System.out.print(weekDays[i]);
+            System.out.println(primes[i]);
+        }
+
+    }
+}

Section9ArrayAB/Array 2.0/src/Arrays2D.java

@@ -0,0 +1,32 @@
+public class Arrays2D
+{
+    public static void main(String[] args)
+    {
+        //Create a 2D array of Strings, with 3 rows and 4 columns
+        String[][] letters = new String[3][4];
+        letters[0] = new String[]{"a", "b", "c", "d", "e"};
+        letters[1] = new String[]{"f", "g", "h", "i", "j"};
+        letters[2] = new String[]{"k", "l", "m", "n", "o"};
+
+        //Enhanced for loop where every iteration, row is a 1D array of Strings.
+        for (String[] row: letters)
+        {
+            //Enhanced for loop where letter is each element of the current row.
+            for (String letter: row)
+            {
+                System.out.print(letter);
+            }
+            System.out.println();
+        }
+
+        int[][] numbers = {{1,2}, {3,4}, {5,6}, {7,8}};
+        for (int y=0; y < numbers.length; y++)
+        {
+            for (int x = 0; x < numbers[0].length; x++)
+            {
+                System.out.print(numbers[y][x]);
+            }
+            System.out.println();
+        }
+    }
+}

Section9ArrayAB/Array IMP/1D_arrays.png

@@ -0,0 +1,29 @@
+import java.util.Scanner;
+
+class A2D
+{
+    public static void main(String[] args)
+    {
+        int [][] A = new int [2][2];
+        Scanner sc = new Scanner(System.in);
+        System.out.println("Enter the elements: ");
+        for(int i = 0; i<2; i++)
+        {
+            for(int j = 0; j<2; j++)
+            {
+                A[i][j] = nextInt[];
+            }
+        } 
+
+        System.out.println("Array elements are: ");
+        for(int i = 0; i<2; i++)
+        {
+            for (int j = 0; j<2; j++)
+            {
+                System.out.print(A[i][j]+" ");
+            }
+        }
+
+        System.out.println("");
+    }
+}

Section9ArrayAB/Array IMP/2D_arrays.png

@@ -0,0 +1,26 @@
+import java.util.Scanner;
+class Array2D
+{
+    public static void main(String [] args)
+    {
+        int [][] A=new int [2][2];
+        Scanner sc = new Scanner(System.in);
+        System.out.println("enter 4 elements");
+        for(int i=0; i<2; i++)
+        {
+            for(int j=0; j<2; j++)
+            {
+                A[i][j] = sc.nextInt();
+            }
+        }
+        System.out.println("Array elements are");
+        for(int i=0; i<2; i++)
+        {
+            for(int j=0; j<2; j++)
+            {
+                System.out.println(A[i][j] + " "+ A[i][j]);
+            }
+        System.out.println(" ");
+        }
+    }
+}

Section9ArrayAB/Array IMP/A2D.java

@@ -0,0 +1,31 @@
+import java.util.Scanner;
+
+class ArrayAdd {
+    public static void main(String[] args) {
+        Scanner sc = new Scanner(System.in);
+        int[] A = new int[5];
+        int[] B = new int[5];
+        int[] C = new int[5];
+
+        System.out.println("Enter array elements A:");
+        for (int i = 0; i < A.length; i++) {
+            A[i] = sc.nextInt();
+        }
+
+        System.out.println("Enter array elements B:");
+        for (int i = 0; i < B.length; i++) {
+            B[i] = sc.nextInt();
+        }
+
+        // Add arrays A and B, store result in C
+        for (int i = 0; i < A.length; i++) {
+            C[i] = A[i] + B[i];
+        }
+
+        // Print result
+        System.out.println("Sum of arrays:");
+        for (int i = 0; i < C.length; i++) {
+            System.out.print(C[i] + " ");
+        }
+    }
+}

Section9ArrayAB/Array IMP/Array2D.java

@@ -0,0 +1,40 @@
+import java.util.ArrayList;
+import java.util.Scanner;
+
+public class ArrayListExample {
+    public static void main(String[] args) {
+        Scanner in = new Scanner(System.in);
+        // Syntax
+        ArrayList<Integer> list = new ArrayList<>(5);
+
+//        list.add(67);
+//        list.add(234);
+//        list.add(654);
+//        list.add(43);
+//        list.add(654);
+//        list.add(8765);
+
+//        System.out.println(list.contains(765432));
+//        System.out.println(list);
+//        list.set(0, 99);
+//
+//        list.remove(2);
+//
+//        System.out.println(list);
+
+        // input
+        for (int i = 0; i < 5; i++) {
+            list.add(in.nextInt());
+        }
+
+        // get item at any index
+        for (int i = 0; i < 5; i++) {
+            System.out.println(list.get(i)); // pass index here, list[index] syntax will not work here
+        }
+
+        System.out.println(list);
+
+
+
+    }
+}

Section9ArrayAB/Array IMP/ArrayAdd.java

@@ -0,0 +1,38 @@
+import java.util.Scanner;
+
+class ArraySum
+{
+    public static void main(String[] args)
+    {
+        int n, sum = 0;
+        Scanner sc = new Scanner(System.in);
+
+        System.out.println("Enter Size of an Array");
+
+        n = sc.nextInt();
+
+        int [] A = new int[n];
+
+        System.out.println("Enter Array Elements: ");
+
+        for(int i = 0; i<A.length; i++)
+        {
+            A[i] = sc.nextInt();
+        }
+
+        System.out.println("Array elements are: ");
+
+        for(int i = 0; i<A.length; i++)
+        {
+            System.out.println(A[i]);
+        }
+
+        System.out.println("Sum of Array Elements are: ");
+
+        for(int i = 0; i<A.length; i++)
+        {
+            sum = sum + A[i];
+        }
+        System.out.println(sum);
+    }
+}