[220811] Level_ 1 같은 숫자는 싫어!

https://school.programmers.co.kr/learn/courses/30/lessons/12906

프로그래머스

#include <vector>

using namespace std;

vector<int> solution(vector<int> arr)
{
    vector<int> answer;
    answer.push_back(arr[0]);
    for (int i = 1; i < arr.size(); i++)
    {
        if (arr[i - 1] == arr[i]) continue;
        else answer.push_back(arr[i]);
    }
    return answer;
}