java how to shift elements in array

Shift elements left

/**
 * @author lautturi.com 
 * Java example: shift elements in array
 */

import java.util.*;

public class Lautturi {

	public static void main(String[] args) {

		int[] intArray = { 1,2,3,4,5,6,7,8,9,10 };
		System.out.println(Arrays.toString(intArray));
		
		int len = 0;
		len = intArray.length;
		int first = intArray[0];
		for(int i=0;i<len-1;i++){
			intArray[i] = intArray[i+1];
		}
		intArray[len-1] = first;
		System.out.println(Arrays.toString(intArray));
	}
}

output:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
[2, 3, 4, 5, 6, 7, 8, 9, 10, 1]

Shift right

/**
 * @author lautturi.com 
 * Java example: shift elements in array
 */

import java.util.*;

public class Lautturi {

	public static void main(String[] args) {

		int[] intArray = { 1,2,3,4,5,6,7,8,9,10 };
		System.out.println(Arrays.toString(intArray));
		
		int len = intArray.length;
		int last = intArray[len-1];
		for(int i=len-1;i>0;i--){
			intArray[i] = intArray[i-1];
		}
		intArray[0] = last;
		System.out.println(Arrays.toString(intArray));
	}
}

output:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
[10, 1, 2, 3, 4, 5, 6, 7, 8, 9]