let same5 = fruits2.filter((fruit) => fruits1.includes(fruit));
console.log('same', same5); // 비교대상을 바꾸기 전이랑 동일한 값 출력된다.

//서로 다른 요소만을 가지는 배열 출력
let diff5 = fruits2.filter((fruit) => !fruits1.includes(fruit));
let diff6 = fruits1.filter((fruit) => !fruits2.includes(fruit));
for (i = 0; i < diff6.length; i++) {
    diff5.push(diff6);
}
console.log('diff', diff6);