💡풀이- Stack 사용import java.util.*;public class Solution { public int[] solution(int []arr) { Stack stack = new Stack(); for(int n : arr){ if(stack.isEmpty() || stack.peek() != n){ stack.push(n); } } return stack.stream().mapToInt(Integer::intValue).toArray(); }}💡풀이 2- Stack을 ArrayDeque로 구현import java.util.*;import jav..