rotate()

Function

It is used to rotate the elements present in the specified list by a given distance.

The distance can be zero, negative, or greater than size of the list.

Positive distance rotates the list to the right, negative distance rotates the list to the left while zero distance does not rotate the list.

This method can be used to rotate lists and arrays.

Declaration

public static void rotate(List<?> list,int distance)	

Parameters

list - This is the list to be rotated.

distance - This is the distance to rotate the list.

Example

import java.util.*;
  
public class RotateList
{
	public static void main(String[] args)
    	{
        	List<Integer>  numbers = new ArrayList<Integer>();
 		for (int i = 101; i <= 110; i++)
		numbers.add(i);
	        System.out.println("Before rotating: " +numbers);
	        Collections.rotate(numbers,3);
        	System.out.println("After rotating: " +numbers);
    }
}

Output

Before rotating: [101, 102, 103, 104, 105, 106, 107, 108, 109, 110]
After rotating: [108, 109, 110, 101, 102, 103, 104, 105, 106, 107]