Rotate the integer array by n positions by left

ArrayRotate.java

import java.io.*;
import java.util.*;
import java.util.stream.Collectors;
import java.text.*;
import java.math.*;
import java.util.regex.*;

public class Solution {

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int n = in.nextInt();
        int k = in.nextInt();
        int a[] = new int[n];
        for(int a_i=0; a_i < n; a_i++){
            a[a_i] = in.nextInt();
        }
        int offset = a.length - k % a.length;
        if (offset > 0) {
            int[] copy = a.clone();
            for (int i = 0; i < a.length; ++i) {
                int j = (i + k) % a.length;
                a[i] = copy[j];
            }
        }
        System.out.print(Arrays.stream(a).mapToObj(e -> String.valueOf(e)).collect(Collectors.joining(" ")));
    }
}