LeftRotateArray.java

import java.util.Scanner;
/* Given an integer array nums, rotate the array to the left by one.



Note: There is no need to return anything, just modify the given array.


Examples:
Input: nums = [1, 2, 3, 4, 5]

Output: [2, 3, 4, 5, 1]

Explanation: Initially, nums = [1, 2, 3, 4, 5]

Rotating once to left -> nums = [2, 3, 4, 5, 1]

Input: nums = [-1, 0, 3, 6]

Output: [0, 3, 6, -1]

Explanation: Initially, nums = [-1, 0, 3, 6]

Rotating once to left -> nums = [0, 3, 6, -1]*/
public class LeftRotateArray{
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);

        System.out.print("Enter size of array: ");
        int n = sc.nextInt();
        int[] nums = new int[n];

        System.out.println("Enter elements:");
        for (int i = 0; i < n; i++) {
            nums[i] = sc.nextInt();
        }

        if (n > 1) {
            int first = nums[0]; 
            for (int i = 0; i < n - 1; i++) {
                nums[i] = nums[i + 1];
            }
            nums[n - 1] = first; 
        }
        System.out.println("\nRotated Array (Left by 1):");
        for (int i = 0; i < n; i++) {
            System.out.print(nums[i] + " ");
        }
    }
}