RotateArray

public class RotateArray {
    public static void rotateLeft(int[] arr, int positions) {
        int length = arr.length;
        positions = positions % length; // Handle cases where positions > length

        int[] temp = new int[positions];
        
        // Copy the first 'positions' elements to a temporary array
        for (int i = 0; i < positions; i++) {
            temp[i] = arr[i];
        }

        // Shift the remaining elements to the left
        for (int i = positions; i < length; i++) {
            arr[i - positions] = arr[i];
        }

        // Copy the elements from the temporary array to the end of the original array
        for (int i = 0; i < positions; i++) {
            arr[length - positions + i] = temp[i];
        }
    }

    public static void main(String[] args) {
        int[] arr = {1, 2, 3, 4, 5};
        int positions = 2; // Rotate left by 2 positions

        System.out.println("Original Array: ");
        for (int num : arr) {
            System.out.print(num + " ");
        }

        rotateLeft(arr, positions);

        System.out.println("\nRotated Array: ");
        for (int num : arr) {
            System.out.print(num + " ");
        }
    }
}