[프로그래머스 | Lv. 1 | JavaScript] 음양 더하기

 

Link

코딩테스트 연습 - 음양 더하기

 

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문제

풀이

(1)

function solution(absolutes, signs) {
    let answer = 0;
    
    let len = absolutes.length;
    for (let i = 0; i < len; i++) {
        answer += signs[i] ? absolutes[i] : - absolutes[i];
    }
    
    return answer;
}

(2)

function solution(absolutes, signs) {
    let answer = 0;
    
    absolutes.forEach((val, i) => answer += signs[i] ? val : -val);
    
    return answer;
}

(3)

function solution(absolutes, signs) {
    return absolutes.reduce((acc, val, i) => acc + (signs[i] ? val : - val), 0);
}