java cont

import java.util.*;

public class Solution {
public int[] solution(int []arr){
 List<Integer> lst = new ArrayList();
        int num = 0;
        for (int i = 0 ; i < arr.length ; i++) {
            if(i == arr.length-1) {
                lst.add(arr[i]);
                break;
            }
            if(arr[i] != arr[i+1]) {
                lst.add(arr[i]);
            }
        }
        int[] answer = new int[lst.size()];
        int temp = 0;
        for (int k : lst) {
            answer[temp++] = k;
        }

        return answer;
    }
}