Page 117 - CTS - CSA TP - Volume 2

COMPUTER SOFTWARE APPLICATION - CITS

• The sum of array elements is returned and stored in the sum variable in the main method.
• Finally, we print the sum of array elements to the console.
These examples illustrate how to pass arrays to methods in Java. By passing arrays to methods, we can perform
operations on arrays effectively and encapsulate array-related logic within methods, promoting code reusability
and readability.

TASK 4: Reversing an Array
// Reverse Array Demo
public class ReverseArrayDemo {
public static void main(String[] args) {

int[] numbers = {1, 2, 3, 4, 5};
// Displaying the original array
System.out.print(“Original array : “);
for (int num : numbers) {

System.out.print(num + “ “);
}
// Calling the method to reverse the array
reverseArray(numbers);
// Displaying the reversed array
System.out.println();

System.out.print(“Reversed array: “);
for (int num : numbers) {
System.out.print(num + “ “);
}

}
// Method to reverse an array
public static void reverseArray(int[] numbers) {
int left = 0;
int right = numbers.length - 1;

while (left < right) {
// Swap elements at left and right indices
int temp = numbers[left];
numbers[left] = numbers[right];

numbers[right] = temp;
// Move left index to the right and right index to the left
left++;
right--;
}
}

}

102

CITS : IT & ITES - Computer Software Application - Exercise 95