[프로그래머스 Level 2] 연속된 부분 수열의 합

function solution(sequence, k) {
    let answer = [0, sequence.length - 1];
 
    let start = 0;
    let end = 0;
    let sum = sequence[0];
    let length = sequence.length;
 
    while(start < sequence.length && end < sequence.length){
        if(sum === k){
            const current = end - start + 1;
 
            if(length > current || length === current && answer[0] > start){
                answer = [start, end];
                length = current;
            }
        }
 
        if(sum >= k){
            sum -= sequence[start++];
        } else {
            sum += sequence[++end];
        }
    }
 
    return answer;
}