문제 : https://programmers.co.kr/learn/courses/30/lessons/86051
// < for문 이용 >
function solution(numbers) {
let result = 0;
for (let i = 0; i < 10; i += 1) {
if (!numbers.includes(i)) {
result += i;
}
}
return result;
}
// < reduce 활용 >
function solution(numbers) {
return 45 - numbers.reduce((acc, cur) => acc + cur);
}
console.log(solution([1, 2, 3, 4, 6, 7, 8, 0])); // 14
console.log(solution([5, 8, 4, 0, 6, 7, 9])); // 6