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rotate.java

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/*

* Write a function that rotates the elements of an ArrayList by a given number of positions. For example, if the ArrayList is rotated by 2 positions, the elements should shift right by 2 places.

Input:

ArrayList: [10, 20, 30, 40, 50]

Rotate by: 2

Output: [40, 50, 10, 20, 30]

*/

import java.util.ArrayList;

import java.util.Collections;

public class rotate {

public static void main(String[] args) {

ArrayList<Integer> list = new ArrayList<>();

list.add(10);

list.add(20);

list.add(30);

list.add(40);

list.add(50);

int rotateBy = 2;

System.out.println("Before rotation: " + list);

Collections.rotate(list, rotateBy);

System.out.println("After rotation: " + list);

}

}