What are common array operations?

Common array operations include:

1. Traversal: Accessing each element in the array, typically using a loop.

   for (int i = 0; i < array.length; i++) {
       System.out.println(array[i]);
   }

2. Insertion: Adding an element at a specific index. Note that arrays have a fixed size, so you may need to create a new array if you want to add more elements.

   int[] newArray = new int[array.length + 1];
   for (int i = 0; i < index; i++) {
       newArray[i] = array[i];
   }
   newArray[index] = newElement;
   for (int i = index; i < array.length; i++) {
       newArray[i + 1] = array[i];
   }

3. Deletion: Removing an element from a specific index. Similar to insertion, this may require creating a new array.

   int[] newArray = new int[array.length - 1];
   for (int i = 0, j = 0; i < array.length; i++) {
       if (i != index) {
           newArray[j++] = array[i];
       }
   }

4. Searching: Finding an element in the array, often using linear search or binary search (if the array is sorted).

   for (int i = 0; i < array.length; i++) {
       if (array[i] == target) {
           System.out.println("Element found at index: " + i);
           break;
       }
   }

5. Sorting: Arranging the elements in a specific order (ascending or descending).

   Arrays.sort(array); // Sorts the array in ascending order

6. Merging: Combining two arrays into one.

   int[] mergedArray = new int[array1.length + array2.length];
   System.arraycopy(array1, 0, mergedArray, 0, array1.length);
   System.arraycopy(array2, 0, mergedArray, array1.length, array2.length);

7. Reversing: Changing the order of elements in the array.

   for (int i = 0; i < array.length / 2; i++) {
       int temp = array[i];
       array[i] = array[array.length - 1 - i];
       array[array.length - 1 - i] = temp;
   }

These operations are fundamental for working with arrays in Java and are commonly used in various programming tasks.