[3차] 방금그곡

programmers.co.kr/learn/courses/30/lessons/17683

코딩테스트 연습 - [3차] 방금그곡

function solution(m, musicinfos) {
    let answer = [];
    let obj = {};
    for (let i = 0; i < musicinfos.length; i++) {
        let arr = musicinfos[i].split(",");
        let a = arr[0].split(":");
        let b = arr[1].split(":");
        let length = (b[0] - a[0]) * 60 + (b[1] - a[1]);
        let str = "";
        arr[3] = arr[3]
          .replace(/(C#)/g, 'c')
          .replace(/(D#)/g, 'd')
          .replace(/(F#)/g, 'f')
          .replace(/(G#)/g, 'g')
          .replace(/(A#)/g, 'a');
        m = m
          .replace(/(C#)/g, 'c')
          .replace(/(D#)/g, 'd')
          .replace(/(F#)/g, 'f')
          .replace(/(G#)/g, 'g')
          .replace(/(A#)/g, 'a');
        for(let j = 0; j < length; j++) {
            str += arr[3][j % arr[3].length];
        }
        obj[arr[2]] = str;
    }
    for (let key in obj) {
        if (obj[key].indexOf(m) >= 0) {
            if (!answer.length) {
                answer = [key, obj[key].length];
            }
            if (obj[key].length > answer[1]) {
                answer = [key, obj[key].length]
            }
        }
    }
    if (answer.length > 0) return answer[0];
    else return "(None)";
}