181931
Link
https://school.programmers.co.kr/learn/courses/30/lessons/181931 (opens in a new tab)
Answer
JavaScript
function solution(a, d, included) {
return included.reduce((acc, flag, i) => {
return flag ? acc + a + d * i : acc;
}, 0);
}https://school.programmers.co.kr/learn/courses/30/lessons/181931 (opens in a new tab)
function solution(a, d, included) {
return included.reduce((acc, flag, i) => {
return flag ? acc + a + d * i : acc;
}, 0);
}