Distinct

오늘은 코딩이 참 안되네.....

https://app.codility.com/demo/results/trainingN7Y4C8-9B5/

public static int solution(int[] A){
    ArrayList array = new ArrayList<>();

    int checkInt = 0;
    for(int i = 0 ; i <  A.length; i++){
        checkInt = A[i];
        boolean isDistinct = false;

        for(int j = 0 ; j < array.size() ; j++){
            if(A[i] == array.get(j)  ){
                isDistinct = true;
            }
        }
        if(!isDistinct){
            array.add(checkInt);
        }
    }

    return array.size();
}